To solve \( (7 \times 10^5) + (2 \times 10^3) \), we first need to express both terms with the same power of ten to make the addition straightforward.
We can rewrite \( 2 \times 10^3 \) in terms of \( 10^5 \) by converting it:
\[ 2 \times 10^3 = 2 \times 10^3 \times \frac{10^2}{10^2} = 2 \times 100 \times \frac{1}{100} = 200 \times 10^1 = 0.02 \times 10^5 \]
Thus, we find:
\[ 2 \times 10^3 = 0.02 \times 10^5 \]
Now we can add the two terms together:
\[ (7 \times 10^5) + (0.02 \times 10^5) = (7 + 0.02) \times 10^5 = 7.02 \times 10^5 \]
Thus, the final answer is:
\[ \boxed{7.02 \times 10^5} \]