Finding the Third Proportional to 42,400.13 and 88,288.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,400.13 : 88,288.31 = 88,288.31 : x
2. Step 2: Convert to fraction form
   42,400.13/88,288.31 = 88,288.31/x
3. Step 3: Cross multiply
   42,400.13x = 88,288.31 × 88,288.31
4. Step 4: Simplify right side
   42,400.13x = 7,794,826,124.10
5. Step 5: Solve for x
   x = 7,794,826,124.10/42,400.13
6. Step 6: Final answer
   x = 183,839.70