Finding the Third Proportional to 361,857 and 500,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,857 : 500,017.50 = 500,017.50 : x
2. Step 2: Convert to fraction form
   361,857/500,017.50 = 500,017.50/x
3. Step 3: Cross multiply
   361,857x = 500,017.50 × 500,017.50
4. Step 4: Simplify right side
   361,857x = 250,017,500,306.25
5. Step 5: Solve for x
   x = 250,017,500,306.25/361,857
6. Step 6: Final answer
   x = 690,929.01