Finding the Third Proportional to 40,879.50 and 54,934.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,879.50 : 54,934.50 = 54,934.50 : x
2. Step 2: Convert to fraction form
   40,879.50/54,934.50 = 54,934.50/x
3. Step 3: Cross multiply
   40,879.50x = 54,934.50 × 54,934.50
4. Step 4: Simplify right side
   40,879.50x = 3,017,799,290.25
5. Step 5: Solve for x
   x = 3,017,799,290.25/40,879.50
6. Step 6: Final answer
   x = 73,821.82