Finding the Third Proportional to 8,865 and 13,605

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865 : 13,605 = 13,605 : x
2. Step 2: Convert to fraction form
   8,865/13,605 = 13,605/x
3. Step 3: Cross multiply
   8,865x = 13,605 × 13,605
4. Step 4: Simplify right side
   8,865x = 185,096,025
5. Step 5: Solve for x
   x = 185,096,025/8,865
6. Step 6: Final answer
   x = 20,879.42