Finding the Third Proportional to 13,216.50 and 20,487.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.50 : 20,487.94 = 20,487.94 : x
2. Step 2: Convert to fraction form
   13,216.50/20,487.94 = 20,487.94/x
3. Step 3: Cross multiply
   13,216.50x = 20,487.94 × 20,487.94
4. Step 4: Simplify right side
   13,216.50x = 419,755,583.00
5. Step 5: Solve for x
   x = 419,755,583.00/13,216.50
6. Step 6: Final answer
   x = 31,759.97