Finding the Third Proportional to 40,357.50 and 56,422.75

Step by Step Solution

1. Step 1: Write the proportion equation
   40,357.50 : 56,422.75 = 56,422.75 : x
2. Step 2: Convert to fraction form
   40,357.50/56,422.75 = 56,422.75/x
3. Step 3: Cross multiply
   40,357.50x = 56,422.75 × 56,422.75
4. Step 4: Simplify right side
   40,357.50x = 3,183,526,717.56
5. Step 5: Solve for x
   x = 3,183,526,717.56/40,357.50
6. Step 6: Final answer
   x = 78,883.15