Finding the Third Proportional to 393,612.50 and 862,879

Step by Step Solution

1. Step 1: Write the proportion equation
   393,612.50 : 862,879 = 862,879 : x
2. Step 2: Convert to fraction form
   393,612.50/862,879 = 862,879/x
3. Step 3: Cross multiply
   393,612.50x = 862,879 × 862,879
4. Step 4: Simplify right side
   393,612.50x = 744,560,168,641
5. Step 5: Solve for x
   x = 744,560,168,641/393,612.50
6. Step 6: Final answer
   x = 1,891,607.02