Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises - Page 23: 90

$9.14382\times10^{43}$

$(1.062\times10^{24})(8.61\times10^{19})$ We start by rearranging the order in which we multiply so we have $(1.062\times8.61)(10^{24}\times10^{19})$ Multiply those out, remember we add the exponents when we multiply like this and we have $(9.14382)(10^{43})$ or $9.14382 \times 10^{43}$ in correct scientific notation.