Finding the Third Proportional to 89,131.50 and 198,187

Step by Step Solution

1. Step 1: Write the proportion equation
   89,131.50 : 198,187 = 198,187 : x
2. Step 2: Convert to fraction form
   89,131.50/198,187 = 198,187/x
3. Step 3: Cross multiply
   89,131.50x = 198,187 × 198,187
4. Step 4: Simplify right side
   89,131.50x = 39,278,086,969
5. Step 5: Solve for x
   x = 39,278,086,969/89,131.50
6. Step 6: Final answer
   x = 440,675.71