คู่ที่ 3 คือใครที่มีผู้ชม 4.89 ล้านคน?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who were the 3rd couple that were viewed by 4.89 million viewers?It is not neccessary to use all the tables.
 table_25664518_4:  (viewers__millions_ [ VARCHAR) ]
SELECT 3 AS rd_couple FROM table_25664518_4 WHERE viewers__millions_ = "4.89"