Finding the Third Proportional to 59,374.50 and 87,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,374.50 : 87,490.50 = 87,490.50 : x
2. Step 2: Convert to fraction form
   59,374.50/87,490.50 = 87,490.50/x
3. Step 3: Cross multiply
   59,374.50x = 87,490.50 × 87,490.50
4. Step 4: Simplify right side
   59,374.50x = 7,654,587,590.25
5. Step 5: Solve for x
   x = 7,654,587,590.25/59,374.50
6. Step 6: Final answer
   x = 128,920.46