Finding the Third Proportional to 863,440 and 1,853,744

Step by Step Solution

1. Step 1: Write the proportion equation
   863,440 : 1,853,744 = 1,853,744 : x
2. Step 2: Convert to fraction form
   863,440/1,853,744 = 1,853,744/x
3. Step 3: Cross multiply
   863,440x = 1,853,744 × 1,853,744
4. Step 4: Simplify right side
   863,440x = 3,436,366,817,536
5. Step 5: Solve for x
   x = 3,436,366,817,536/863,440
6. Step 6: Final answer
   x = 3,979,855.95