## Elementary Technical Mathematics

$$1.13 \times 10^{-1}.$$
We simplify by multiplying like terms as follows: $$(6.2\times 10^{-5})(5.2\times 10^{-6})(3.5\times 10^{8})\\ =112.84 \times 10^{-3}=1.13 \times 10^{-1}.$$