Finding the Third Proportional to 394,771.50 and 868,257

Step by Step Solution

1. Step 1: Write the proportion equation
   394,771.50 : 868,257 = 868,257 : x
2. Step 2: Convert to fraction form
   394,771.50/868,257 = 868,257/x
3. Step 3: Cross multiply
   394,771.50x = 868,257 × 868,257
4. Step 4: Simplify right side
   394,771.50x = 753,870,218,049
5. Step 5: Solve for x
   x = 753,870,218,049/394,771.50
6. Step 6: Final answer
   x = 1,909,636.89