Finding the Third Proportional to 644,820 and 1,016,695

Step by Step Solution

1. Step 1: Write the proportion equation
   644,820 : 1,016,695 = 1,016,695 : x
2. Step 2: Convert to fraction form
   644,820/1,016,695 = 1,016,695/x
3. Step 3: Cross multiply
   644,820x = 1,016,695 × 1,016,695
4. Step 4: Simplify right side
   644,820x = 1,033,668,723,025
5. Step 5: Solve for x
   x = 1,033,668,723,025/644,820
6. Step 6: Final answer
   x = 1,603,034.53