Finding the Third Proportional to 8,140.50 and 17,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,140.50 : 17,617.50 = 17,617.50 : x
2. Step 2: Convert to fraction form
   8,140.50/17,617.50 = 17,617.50/x
3. Step 3: Cross multiply
   8,140.50x = 17,617.50 × 17,617.50
4. Step 4: Simplify right side
   8,140.50x = 310,376,306.25
5. Step 5: Solve for x
   x = 310,376,306.25/8,140.50
6. Step 6: Final answer
   x = 38,127.43