Finding the Third Proportional to 59,917.50 and 90,972

Step by Step Solution

1. Step 1: Write the proportion equation
   59,917.50 : 90,972 = 90,972 : x
2. Step 2: Convert to fraction form
   59,917.50/90,972 = 90,972/x
3. Step 3: Cross multiply
   59,917.50x = 90,972 × 90,972
4. Step 4: Simplify right side
   59,917.50x = 8,275,904,784
5. Step 5: Solve for x
   x = 8,275,904,784/59,917.50
6. Step 6: Final answer
   x = 138,121.66