Finding the Third Proportional to 8,855.16 and 12,381.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,855.16 : 12,381.61 = 12,381.61 : x
2. Step 2: Convert to fraction form
   8,855.16/12,381.61 = 12,381.61/x
3. Step 3: Cross multiply
   8,855.16x = 12,381.61 × 12,381.61
4. Step 4: Simplify right side
   8,855.16x = 153,304,250.72
5. Step 5: Solve for x
   x = 153,304,250.72/8,855.16
6. Step 6: Final answer
   x = 17,312.43