Complex sentence: As the show has gone on, its ratings have continued to grow; the third season debut was watched by a total of 2.686 million viewers, the fourth season premiere was watched by 2.655 million, and the fifth season opener was watched by 3.435 million.
Split into simpler sentences: As the show has gone on, its ratings have continued to grow. The third season debut was watched by a total of 2.686 million viewers, the fourth season premiere was watched by 2.655 million, and the fifth season opener was watched by 3.435 million.