Finding the Third Proportional to 8,553.75 and 18,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,553.75 : 18,385.50 = 18,385.50 : x
2. Step 2: Convert to fraction form
   8,553.75/18,385.50 = 18,385.50/x
3. Step 3: Cross multiply
   8,553.75x = 18,385.50 × 18,385.50
4. Step 4: Simplify right side
   8,553.75x = 338,026,610.25
5. Step 5: Solve for x
   x = 338,026,610.25/8,553.75
6. Step 6: Final answer
   x = 39,517.94