Finding the Third Proportional to 644,979 and 1,401,900

Step by Step Solution

1. Step 1: Write the proportion equation
   644,979 : 1,401,900 = 1,401,900 : x
2. Step 2: Convert to fraction form
   644,979/1,401,900 = 1,401,900/x
3. Step 3: Cross multiply
   644,979x = 1,401,900 × 1,401,900
4. Step 4: Simplify right side
   644,979x = 1,965,323,610,000
5. Step 5: Solve for x
   x = 1,965,323,610,000/644,979
6. Step 6: Final answer
   x = 3,047,112.56