Finding the Third Proportional to 85,801.50 and 131,256

Step by Step Solution

1. Step 1: Write the proportion equation
   85,801.50 : 131,256 = 131,256 : x
2. Step 2: Convert to fraction form
   85,801.50/131,256 = 131,256/x
3. Step 3: Cross multiply
   85,801.50x = 131,256 × 131,256
4. Step 4: Simplify right side
   85,801.50x = 17,228,137,536
5. Step 5: Solve for x
   x = 17,228,137,536/85,801.50
6. Step 6: Final answer
   x = 200,790.63