Finding the Third Proportional to 92,003.25 and 138,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,003.25 : 138,879.50 = 138,879.50 : x
2. Step 2: Convert to fraction form
   92,003.25/138,879.50 = 138,879.50/x
3. Step 3: Cross multiply
   92,003.25x = 138,879.50 × 138,879.50
4. Step 4: Simplify right side
   92,003.25x = 19,287,515,520.25
5. Step 5: Solve for x
   x = 19,287,515,520.25/92,003.25
6. Step 6: Final answer
   x = 209,639.50