Finding the Third Proportional to 31,066.50 and 67,650

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.50 : 67,650 = 67,650 : x
2. Step 2: Convert to fraction form
   31,066.50/67,650 = 67,650/x
3. Step 3: Cross multiply
   31,066.50x = 67,650 × 67,650
4. Step 4: Simplify right side
   31,066.50x = 4,576,522,500
5. Step 5: Solve for x
   x = 4,576,522,500/31,066.50
6. Step 6: Final answer
   x = 147,313.75