Finding the Third Proportional to 19,617.38 and 42,879.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,617.38 : 42,879.75 = 42,879.75 : x
2. Step 2: Convert to fraction form
   19,617.38/42,879.75 = 42,879.75/x
3. Step 3: Cross multiply
   19,617.38x = 42,879.75 × 42,879.75
4. Step 4: Simplify right side
   19,617.38x = 1,838,672,960.06
5. Step 5: Solve for x
   x = 1,838,672,960.06/19,617.38
6. Step 6: Final answer
   x = 93,726.76