Answer
US households that owned premium cable (from those with 1+ TVs): 54.36 million
Work Step by Step
We are told that $114.2$ million US households owned 1+ TV sets. We are also told that 47.6% of these received premium cable. To find the number of households with premium cable and at least 1 TV, we multiply:
US households that owned premium cable (from those with 1+ TVs):
$47.6*114.2=54.36$ million