Mountain West Conference presidents have approved San Diego State's request to rejoin the conference according to ESPN.com.
SDSU announced it would join the Big East as a football-only member in December 2011, with a July 1 start date, and play other sports in the Big West. The Aztecs will now play all sports as a Mountain West member.
SDSU's decision follows Boise State's Dec. 31 announcement that it would not join the Big East as a football-only member. A term of SDSU's Big East contract provided the Aztecs with the option to leave -- without paying an exit fee -- if Boise State did not join.
MWC commissioner Craig Thompson told ESPN that league presidents were required to vote by a 3/4 majority to approve San Diego State's return.