Finding the Third Proportional to 55,176.75 and 87,429.38

Step by Step Solution

1. Step 1: Write the proportion equation
   55,176.75 : 87,429.38 = 87,429.38 : x
2. Step 2: Convert to fraction form
   55,176.75/87,429.38 = 87,429.38/x
3. Step 3: Cross multiply
   55,176.75x = 87,429.38 × 87,429.38
4. Step 4: Simplify right side
   55,176.75x = 7,643,895,612.89
5. Step 5: Solve for x
   x = 7,643,895,612.89/55,176.75
6. Step 6: Final answer
   x = 138,534.72