Finding the Third Proportional to 394,483.50 and 862,778.25

Step by Step Solution

1. Step 1: Write the proportion equation
   394,483.50 : 862,778.25 = 862,778.25 : x
2. Step 2: Convert to fraction form
   394,483.50/862,778.25 = 862,778.25/x
3. Step 3: Cross multiply
   394,483.50x = 862,778.25 × 862,778.25
4. Step 4: Simplify right side
   394,483.50x = 744,386,308,673.06
5. Step 5: Solve for x
   x = 744,386,308,673.06/394,483.50
6. Step 6: Final answer
   x = 1,886,989.72