Finding the Third Proportional to 57,042 and 88,155

Step by Step Solution

1. Step 1: Write the proportion equation
   57,042 : 88,155 = 88,155 : x
2. Step 2: Convert to fraction form
   57,042/88,155 = 88,155/x
3. Step 3: Cross multiply
   57,042x = 88,155 × 88,155
4. Step 4: Simplify right side
   57,042x = 7,771,304,025
5. Step 5: Solve for x
   x = 7,771,304,025/57,042
6. Step 6: Final answer
   x = 136,238.28