1. State the missing exponent: \( 173.45=1.7345 \times 10^{7} \)

To find the missing exponent in the equation \( 173.45 = 1.7345 \times 10^{x} \), we can rewrite \( 173.45 \) in scientific notation. First, we express \( 173.45 \) in scientific notation: \[ 173.45 = 1.7345 \times 10^{2} \] Now we can set the two expressions equal to each other: \[ 1.7345 \times 10^{2} = 1.7345 \times 10^{x} \] Since the coefficients \( 1.7345 \) are the same, we can equate the exponents: \[ 2 = x \] Thus, the missing exponent is: \[ \boxed{2} \]