Finding the Third Proportional to 40,780.13 and 54,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,780.13 : 54,877.50 = 54,877.50 : x
2. Step 2: Convert to fraction form
   40,780.13/54,877.50 = 54,877.50/x
3. Step 3: Cross multiply
   40,780.13x = 54,877.50 × 54,877.50
4. Step 4: Simplify right side
   40,780.13x = 3,011,540,006.25
5. Step 5: Solve for x
   x = 3,011,540,006.25/40,780.13
6. Step 6: Final answer
   x = 73,848.23