Finding the Third Proportional to 644,618 and 1,366,074

Step by Step Solution

1. Step 1: Write the proportion equation
   644,618 : 1,366,074 = 1,366,074 : x
2. Step 2: Convert to fraction form
   644,618/1,366,074 = 1,366,074/x
3. Step 3: Cross multiply
   644,618x = 1,366,074 × 1,366,074
4. Step 4: Simplify right side
   644,618x = 1,866,158,173,476
5. Step 5: Solve for x
   x = 1,866,158,173,476/644,618
6. Step 6: Final answer
   x = 2,894,983.03