Finding the Third Proportional to 644,994 and 1,008,039

Step by Step Solution

1. Step 1: Write the proportion equation
   644,994 : 1,008,039 = 1,008,039 : x
2. Step 2: Convert to fraction form
   644,994/1,008,039 = 1,008,039/x
3. Step 3: Cross multiply
   644,994x = 1,008,039 × 1,008,039
4. Step 4: Simplify right side
   644,994x = 1,016,142,625,521
5. Step 5: Solve for x
   x = 1,016,142,625,521/644,994
6. Step 6: Final answer
   x = 1,575,429.58