Finding the Third Proportional to 87,212 and 131,501.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,212 : 131,501.50 = 131,501.50 : x
2. Step 2: Convert to fraction form
   87,212/131,501.50 = 131,501.50/x
3. Step 3: Cross multiply
   87,212x = 131,501.50 × 131,501.50
4. Step 4: Simplify right side
   87,212x = 17,292,644,502.25
5. Step 5: Solve for x
   x = 17,292,644,502.25/87,212
6. Step 6: Final answer
   x = 198,282.86