Finding the Third Proportional to 31,630.50 and 67,149

Step by Step Solution

1. Step 1: Write the proportion equation
   31,630.50 : 67,149 = 67,149 : x
2. Step 2: Convert to fraction form
   31,630.50/67,149 = 67,149/x
3. Step 3: Cross multiply
   31,630.50x = 67,149 × 67,149
4. Step 4: Simplify right side
   31,630.50x = 4,508,988,201
5. Step 5: Solve for x
   x = 4,508,988,201/31,630.50
6. Step 6: Final answer
   x = 142,551.91