Finding the Third Proportional to 31,552 and 64,720

Step by Step Solution

1. Step 1: Write the proportion equation
   31,552 : 64,720 = 64,720 : x
2. Step 2: Convert to fraction form
   31,552/64,720 = 64,720/x
3. Step 3: Cross multiply
   31,552x = 64,720 × 64,720
4. Step 4: Simplify right side
   31,552x = 4,188,678,400
5. Step 5: Solve for x
   x = 4,188,678,400/31,552
6. Step 6: Final answer
   x = 132,754.77