Finding the Third Proportional to 863,404 and 1,853,676

Step by Step Solution

1. Step 1: Write the proportion equation
   863,404 : 1,853,676 = 1,853,676 : x
2. Step 2: Convert to fraction form
   863,404/1,853,676 = 1,853,676/x
3. Step 3: Cross multiply
   863,404x = 1,853,676 × 1,853,676
4. Step 4: Simplify right side
   863,404x = 3,436,114,712,976
5. Step 5: Solve for x
   x = 3,436,114,712,976/863,404
6. Step 6: Final answer
   x = 3,979,729.90