Nacho's own goal put Betis ahead at the break but Sergio Ramos, Asensio and Cristiano Ronaldo scored to put the defending champions in control.
"It's unbelievable to be number one again. This is one of the best weeks of my life."
The pair scored 68.36 in the short dance and finished 10th with the top 20 competing in Tuesday's free dance.
The overall betters the West Indies' 236-6 in a 2015 win over South Africa.
The 14-time Paralympic champion Sarah Storey will go back to the outstanding Britain team for next month's Para-biking ...
Watch every minute of PyeongChang 2018
16-02 | Winter sports |
14-02 | Winter sports |
25-12 | Basketball |
11-12 | Football |
27-11 | Football |
20-11 | Football |
16-11 | Football |
13-11 | Football |
09-11 | Football |
08-11 | Football |
Steve Bunce: Tyson Fury would beat Anthony Joshua but fight is now a fantasy
02/11 | Boxing |
Sergio Ramos 'already has the door open' for PSG superstar Neymar
09/11 | Football |
New China coach Shane Sutton 'excited' ahead of return to Manchester velodrome
09/11 | Cycling |
Guerrieri’s talent recognised with WTCC factory chance
24/10 | Auto-Moto |