Finding the Third Proportional to 80,485,438 and 174,581,658

Step by Step Solution

1. Step 1: Write the proportion equation
   80,485,438 : 174,581,658 = 174,581,658 : x
2. Step 2: Convert to fraction form
   80,485,438/174,581,658 = 174,581,658/x
3. Step 3: Cross multiply
   80,485,438x = 174,581,658 × 174,581,658
4. Step 4: Simplify right side
   80,485,438x = 30,478,755,310,028,964
5. Step 5: Solve for x
   x = 30,478,755,310,028,964/80,485,438
6. Step 6: Final answer
   x = 378,686,580.67