Finding the Third Proportional to 199,793.25 and 428,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,793.25 : 428,017.50 = 428,017.50 : x
2. Step 2: Convert to fraction form
   199,793.25/428,017.50 = 428,017.50/x
3. Step 3: Cross multiply
   199,793.25x = 428,017.50 × 428,017.50
4. Step 4: Simplify right side
   199,793.25x = 183,198,980,306.25
5. Step 5: Solve for x
   x = 183,198,980,306.25/199,793.25
6. Step 6: Final answer
   x = 916,942.79