By Sonya Dowsett and Carlos Ruano

MADRID (Reuters) - Sacyr Vallehermoso (SVO.MC: Quote, Profile, Research) sold its stake in Eiffage (FOUG.PA: Quote, Profile, Research) for 1.92 billion euros ($3 billion) on Thursday, finally drawing a line under the Spanish builder's ill-fated push into France.

Sacyr said it sold the 33.32 percent stake in the public works company to a group of French institutional investors for 62 euros per share, one euro less than the price Sacyr said it had agreed to sell at in a statement on April 9.

The deal ends a bitter two-year battle between the companies during which Eiffage rejected the Sacyr's attempts to gain board seats and threw out an all-share takeover bid from the Spanish, deriding them as "orange growers and golf players from Murcia."

As late as this week, Sacyr Chairman Luis del Rivero was put under formal investigation by a French judge over the company's attempt to take control of Eiffage.

Eiffage, the builder of the Sydney Opera House and the world's tallest suspension bridge, said it would drop legal proceedings against Sacyr now it was selling its stake.

Sacyr did not name the buyers but French state bank Caisse des Depots later said it had bought 10.95 percent of Eiffage share capital from Sacyr.

A source close to the deal told Reuters other investors included BNP Paribas (BNPP.PA: Quote, Profile, Research), Natixis (CNAT.PA: Quote, Profile, Research), Societe Generale (SOGN.PA: Quote, Profile, Research), AGF (ALVG.DE: Quote, Profile, Research) and Groupama.

Eiffage said all the investors buying Sacyr's stake were already among its shareholders.