Finding the Third Proportional to 10,866 and 15,499

Step by Step Solution

1. Step 1: Write the proportion equation
   10,866 : 15,499 = 15,499 : x
2. Step 2: Convert to fraction form
   10,866/15,499 = 15,499/x
3. Step 3: Cross multiply
   10,866x = 15,499 × 15,499
4. Step 4: Simplify right side
   10,866x = 240,219,001
5. Step 5: Solve for x
   x = 240,219,001/10,866
6. Step 6: Final answer
   x = 22,107.40