Finding the Third Proportional to 90,721.50 and 141,050

Step by Step Solution

1. Step 1: Write the proportion equation
   90,721.50 : 141,050 = 141,050 : x
2. Step 2: Convert to fraction form
   90,721.50/141,050 = 141,050/x
3. Step 3: Cross multiply
   90,721.50x = 141,050 × 141,050
4. Step 4: Simplify right side
   90,721.50x = 19,895,102,500
5. Step 5: Solve for x
   x = 19,895,102,500/90,721.50
6. Step 6: Final answer
   x = 219,298.65