Finding the Third Proportional to 87,042 and 131,256

Step by Step Solution

1. Step 1: Write the proportion equation
   87,042 : 131,256 = 131,256 : x
2. Step 2: Convert to fraction form
   87,042/131,256 = 131,256/x
3. Step 3: Cross multiply
   87,042x = 131,256 × 131,256
4. Step 4: Simplify right side
   87,042x = 17,228,137,536
5. Step 5: Solve for x
   x = 17,228,137,536/87,042
6. Step 6: Final answer
   x = 197,929.02