Finding the Third Proportional to 450,508.50 and 800,856

Step by Step Solution

1. Step 1: Write the proportion equation
   450,508.50 : 800,856 = 800,856 : x
2. Step 2: Convert to fraction form
   450,508.50/800,856 = 800,856/x
3. Step 3: Cross multiply
   450,508.50x = 800,856 × 800,856
4. Step 4: Simplify right side
   450,508.50x = 641,370,332,736
5. Step 5: Solve for x
   x = 641,370,332,736/450,508.50
6. Step 6: Final answer
   x = 1,423,658.67