Finding the Third Proportional to 12,286.69 and 18,381.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,286.69 : 18,381.09 = 18,381.09 : x
2. Step 2: Convert to fraction form
   12,286.69/18,381.09 = 18,381.09/x
3. Step 3: Cross multiply
   12,286.69x = 18,381.09 × 18,381.09
4. Step 4: Simplify right side
   12,286.69x = 337,864,607.45
5. Step 5: Solve for x
   x = 337,864,607.45/12,286.69
6. Step 6: Final answer
   x = 27,498.43