Finding the Third Proportional to 55,426.78 and 81,169.59

Step by Step Solution

1. Step 1: Write the proportion equation
   55,426.78 : 81,169.59 = 81,169.59 : x
2. Step 2: Convert to fraction form
   55,426.78/81,169.59 = 81,169.59/x
3. Step 3: Cross multiply
   55,426.78x = 81,169.59 × 81,169.59
4. Step 4: Simplify right side
   55,426.78x = 6,588,502,949.54
5. Step 5: Solve for x
   x = 6,588,502,949.54/55,426.78
6. Step 6: Final answer
   x = 118,868.58