Finding the Third Proportional to 30,417.75 and 40,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,417.75 : 40,687.50 = 40,687.50 : x
2. Step 2: Convert to fraction form
   30,417.75/40,687.50 = 40,687.50/x
3. Step 3: Cross multiply
   30,417.75x = 40,687.50 × 40,687.50
4. Step 4: Simplify right side
   30,417.75x = 1,655,472,656.25
5. Step 5: Solve for x
   x = 1,655,472,656.25/30,417.75
6. Step 6: Final answer
   x = 54,424.56