Finding the Third Proportional to 12,439.50 and 27,042.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,439.50 : 27,042.75 = 27,042.75 : x
2. Step 2: Convert to fraction form
   12,439.50/27,042.75 = 27,042.75/x
3. Step 3: Cross multiply
   12,439.50x = 27,042.75 × 27,042.75
4. Step 4: Simplify right side
   12,439.50x = 731,310,327.56
5. Step 5: Solve for x
   x = 731,310,327.56/12,439.50
6. Step 6: Final answer
   x = 58,789.37