Finding the Third Proportional to 382,142 and 809,800

Step by Step Solution

1. Step 1: Write the proportion equation
   382,142 : 809,800 = 809,800 : x
2. Step 2: Convert to fraction form
   382,142/809,800 = 809,800/x
3. Step 3: Cross multiply
   382,142x = 809,800 × 809,800
4. Step 4: Simplify right side
   382,142x = 655,776,040,000
5. Step 5: Solve for x
   x = 655,776,040,000/382,142
6. Step 6: Final answer
   x = 1,716,053.30