Finding the Third Proportional to 799,966 and 1,689,860

Step by Step Solution

1. Step 1: Write the proportion equation
   799,966 : 1,689,860 = 1,689,860 : x
2. Step 2: Convert to fraction form
   799,966/1,689,860 = 1,689,860/x
3. Step 3: Cross multiply
   799,966x = 1,689,860 × 1,689,860
4. Step 4: Simplify right side
   799,966x = 2,855,626,819,600
5. Step 5: Solve for x
   x = 2,855,626,819,600/799,966
6. Step 6: Final answer
   x = 3,569,685.24