Finding the Third Proportional to 42,359.34 and 56,472.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,359.34 : 56,472.89 = 56,472.89 : x
2. Step 2: Convert to fraction form
   42,359.34/56,472.89 = 56,472.89/x
3. Step 3: Cross multiply
   42,359.34x = 56,472.89 × 56,472.89
4. Step 4: Simplify right side
   42,359.34x = 3,189,187,375.54
5. Step 5: Solve for x
   x = 3,189,187,375.54/42,359.34
6. Step 6: Final answer
   x = 75,288.88