Finding the Third Proportional to 644,712 and 1,401,366

Step by Step Solution

1. Step 1: Write the proportion equation
   644,712 : 1,401,366 = 1,401,366 : x
2. Step 2: Convert to fraction form
   644,712/1,401,366 = 1,401,366/x
3. Step 3: Cross multiply
   644,712x = 1,401,366 × 1,401,366
4. Step 4: Simplify right side
   644,712x = 1,963,826,665,956
5. Step 5: Solve for x
   x = 1,963,826,665,956/644,712
6. Step 6: Final answer
   x = 3,046,052.60