Finding the Third Proportional to 644,561 and 1,418,002

Step by Step Solution

1. Step 1: Write the proportion equation
   644,561 : 1,418,002 = 1,418,002 : x
2. Step 2: Convert to fraction form
   644,561/1,418,002 = 1,418,002/x
3. Step 3: Cross multiply
   644,561x = 1,418,002 × 1,418,002
4. Step 4: Simplify right side
   644,561x = 2,010,729,672,004
5. Step 5: Solve for x
   x = 2,010,729,672,004/644,561
6. Step 6: Final answer
   x = 3,119,533.56