Finding the Third Proportional to 18,288 and 27,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,288 : 27,439.50 = 27,439.50 : x
2. Step 2: Convert to fraction form
   18,288/27,439.50 = 27,439.50/x
3. Step 3: Cross multiply
   18,288x = 27,439.50 × 27,439.50
4. Step 4: Simplify right side
   18,288x = 752,926,160.25
5. Step 5: Solve for x
   x = 752,926,160.25/18,288
6. Step 6: Final answer
   x = 41,170.50