Finding the Third Proportional to 394,542 and 862,911.75

Step by Step Solution

1. Step 1: Write the proportion equation
   394,542 : 862,911.75 = 862,911.75 : x
2. Step 2: Convert to fraction form
   394,542/862,911.75 = 862,911.75/x
3. Step 3: Cross multiply
   394,542x = 862,911.75 × 862,911.75
4. Step 4: Simplify right side
   394,542x = 744,616,688,288.06
5. Step 5: Solve for x
   x = 744,616,688,288.06/394,542
6. Step 6: Final answer
   x = 1,887,293.85