Finding the Third Proportional to 89,221.50 and 198,126

Step by Step Solution

1. Step 1: Write the proportion equation
   89,221.50 : 198,126 = 198,126 : x
2. Step 2: Convert to fraction form
   89,221.50/198,126 = 198,126/x
3. Step 3: Cross multiply
   89,221.50x = 198,126 × 198,126
4. Step 4: Simplify right side
   89,221.50x = 39,253,911,876
5. Step 5: Solve for x
   x = 39,253,911,876/89,221.50
6. Step 6: Final answer
   x = 439,960.23