Finding the Third Proportional to 18,660.38 and 27,439.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,660.38 : 27,439.88 = 27,439.88 : x
2. Step 2: Convert to fraction form
   18,660.38/27,439.88 = 27,439.88/x
3. Step 3: Cross multiply
   18,660.38x = 27,439.88 × 27,439.88
4. Step 4: Simplify right side
   18,660.38x = 752,946,740.02
5. Step 5: Solve for x
   x = 752,946,740.02/18,660.38
6. Step 6: Final answer
   x = 40,350.03