Finding the Third Proportional to 91,930.50 and 198,384

Step by Step Solution

1. Step 1: Write the proportion equation
   91,930.50 : 198,384 = 198,384 : x
2. Step 2: Convert to fraction form
   91,930.50/198,384 = 198,384/x
3. Step 3: Cross multiply
   91,930.50x = 198,384 × 198,384
4. Step 4: Simplify right side
   91,930.50x = 39,356,211,456
5. Step 5: Solve for x
   x = 39,356,211,456/91,930.50
6. Step 6: Final answer
   x = 428,108.32