Finding the Third Proportional to 31,572 and 68,507

Step by Step Solution

1. Step 1: Write the proportion equation
   31,572 : 68,507 = 68,507 : x
2. Step 2: Convert to fraction form
   31,572/68,507 = 68,507/x
3. Step 3: Cross multiply
   31,572x = 68,507 × 68,507
4. Step 4: Simplify right side
   31,572x = 4,693,209,049
5. Step 5: Solve for x
   x = 4,693,209,049/31,572
6. Step 6: Final answer
   x = 148,650.99