Finding the Third Proportional to 198,246.50 and 428,750

Step by Step Solution

1. Step 1: Write the proportion equation
   198,246.50 : 428,750 = 428,750 : x
2. Step 2: Convert to fraction form
   198,246.50/428,750 = 428,750/x
3. Step 3: Cross multiply
   198,246.50x = 428,750 × 428,750
4. Step 4: Simplify right side
   198,246.50x = 183,826,562,500
5. Step 5: Solve for x
   x = 183,826,562,500/198,246.50
6. Step 6: Final answer
   x = 927,262.59