Finding the Third Proportional to 12,361.50 and 18,402.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,361.50 : 18,402.75 = 18,402.75 : x
2. Step 2: Convert to fraction form
   12,361.50/18,402.75 = 18,402.75/x
3. Step 3: Cross multiply
   12,361.50x = 18,402.75 × 18,402.75
4. Step 4: Simplify right side
   12,361.50x = 338,661,207.56
5. Step 5: Solve for x
   x = 338,661,207.56/12,361.50
6. Step 6: Final answer
   x = 27,396.45