Finding the Third Proportional to 799,868 and 1,689,664

Step by Step Solution

1. Step 1: Write the proportion equation
   799,868 : 1,689,664 = 1,689,664 : x
2. Step 2: Convert to fraction form
   799,868/1,689,664 = 1,689,664/x
3. Step 3: Cross multiply
   799,868x = 1,689,664 × 1,689,664
4. Step 4: Simplify right side
   799,868x = 2,854,964,432,896
5. Step 5: Solve for x
   x = 2,854,964,432,896/799,868
6. Step 6: Final answer
   x = 3,569,294.47