Finding the Third Proportional to 863,738 and 1,782,799

Step by Step Solution

1. Step 1: Write the proportion equation
   863,738 : 1,782,799 = 1,782,799 : x
2. Step 2: Convert to fraction form
   863,738/1,782,799 = 1,782,799/x
3. Step 3: Cross multiply
   863,738x = 1,782,799 × 1,782,799
4. Step 4: Simplify right side
   863,738x = 3,178,372,274,401
5. Step 5: Solve for x
   x = 3,178,372,274,401/863,738
6. Step 6: Final answer
   x = 3,679,787.48