Finding the Third Proportional to 87,648 and 131,321

Step by Step Solution

1. Step 1: Write the proportion equation
   87,648 : 131,321 = 131,321 : x
2. Step 2: Convert to fraction form
   87,648/131,321 = 131,321/x
3. Step 3: Cross multiply
   87,648x = 131,321 × 131,321
4. Step 4: Simplify right side
   87,648x = 17,245,205,041
5. Step 5: Solve for x
   x = 17,245,205,041/87,648
6. Step 6: Final answer
   x = 196,755.26