Finding the Third Proportional to 13,229.50 and 31,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,229.50 : 31,212.50 = 31,212.50 : x
2. Step 2: Convert to fraction form
   13,229.50/31,212.50 = 31,212.50/x
3. Step 3: Cross multiply
   13,229.50x = 31,212.50 × 31,212.50
4. Step 4: Simplify right side
   13,229.50x = 974,220,156.25
5. Step 5: Solve for x
   x = 974,220,156.25/13,229.50
6. Step 6: Final answer
   x = 73,639.98