Finding the Third Proportional to 4,086.50 and 8,650

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.50 : 8,650 = 8,650 : x
2. Step 2: Convert to fraction form
   4,086.50/8,650 = 8,650/x
3. Step 3: Cross multiply
   4,086.50x = 8,650 × 8,650
4. Step 4: Simplify right side
   4,086.50x = 74,822,500
5. Step 5: Solve for x
   x = 74,822,500/4,086.50
6. Step 6: Final answer
   x = 18,309.68