Chapter 13 - Section 13.4 - Limits at Infinity; Limits of Sequences - 13.4 Exercises - Page 930: 22

$403.4$

Using table of values for $x=10$, $100$, $1000$, $10000$, $100000$ and $1000000$ you get values in the attached table image. Given this, the limit approaches $403.4$ as $x$ approaches infinity. You can also graph the equation to verify.