Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_25664518_4 (viewers__millions_ VARCHAR)

### Question ###
Who were the 3rd couple that were viewed by 4.89 million viewers? 

### Accurate SQL ###

SELECT 3 AS rd_couple FROM table_25664518_4 WHERE viewers__millions_ = "4.89"