Wall St climbs for third straight day

NEW YORK (Reuters) - Wall Street closed its best three-day run in last three months on Wednesday after the Greek parliament approved austerity measures to avoid defaulting on its debt.

The Dow Jones industrial average <.DJI> gained 72.73 points, or 0.60 percent, to end unofficially at 12,261.42. The Standard & Poor's 500 Index <.SPX> rose 10.75 points, or 0.83 percent, to finish unofficially at 1,307.42. The Nasdaq Composite Index <.IXIC> advanced 11.18 points, or 0.41 percent, to close unofficially at 2,740.49.

(Reporting by Chuck Mikolajczak; Editing by Jan Paschal)