Finding the Third Proportional to 42,130.13 and 90,456.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,130.13 : 90,456.75 = 90,456.75 : x
2. Step 2: Convert to fraction form
   42,130.13/90,456.75 = 90,456.75/x
3. Step 3: Cross multiply
   42,130.13x = 90,456.75 × 90,456.75
4. Step 4: Simplify right side
   42,130.13x = 8,182,423,620.56
5. Step 5: Solve for x
   x = 8,182,423,620.56/42,130.13
6. Step 6: Final answer
   x = 194,217.88