Finding the Third Proportional to 669,870 and 1,444,689

Step by Step Solution

1. Step 1: Write the proportion equation
   669,870 : 1,444,689 = 1,444,689 : x
2. Step 2: Convert to fraction form
   669,870/1,444,689 = 1,444,689/x
3. Step 3: Cross multiply
   669,870x = 1,444,689 × 1,444,689
4. Step 4: Simplify right side
   669,870x = 2,087,126,306,721
5. Step 5: Solve for x
   x = 2,087,126,306,721/669,870
6. Step 6: Final answer
   x = 3,115,718.43