After wasting several promising chances, the former Manchester United man scored from the penalty spot to cap a 2-0 victory for the Merengue - ending a run of more than five hours without a league goal.
That strike took him onto 234 goals in the nation's top flight, drawing level with former Madrid favorite Hugo Sanchez in the rankings.
Ronaldo, however, reached the mark in 134 fewer games than the legendary Mexican forward.
His penalty, moreover, took him to 48 successful Liga spot kicks, 11 more than anyone else in the top five European leagues since 2009/10.
Zarra, with 251 goals, is the next target for Cristiano, while Lionel Messi leads the standings with 290 goals.
Source: http://www.goal.com/en-ca/news/4184/spain/2015/11/29/17846252/ronaldo-becomes-la-ligas-third-all-time-top-scorer?ICID=AR_PN_7