Finding the Third Proportional to 8,499.50 and 18,315

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.50 : 18,315 = 18,315 : x
2. Step 2: Convert to fraction form
   8,499.50/18,315 = 18,315/x
3. Step 3: Cross multiply
   8,499.50x = 18,315 × 18,315
4. Step 4: Simplify right side
   8,499.50x = 335,439,225
5. Step 5: Solve for x
   x = 335,439,225/8,499.50
6. Step 6: Final answer
   x = 39,465.76