Finding the Third Proportional to 161,142 and 354,504

Step by Step Solution

1. Step 1: Write the proportion equation
   161,142 : 354,504 = 354,504 : x
2. Step 2: Convert to fraction form
   161,142/354,504 = 354,504/x
3. Step 3: Cross multiply
   161,142x = 354,504 × 354,504
4. Step 4: Simplify right side
   161,142x = 125,673,086,016
5. Step 5: Solve for x
   x = 125,673,086,016/161,142
6. Step 6: Final answer
   x = 779,890.32