Finding the Third Proportional to 726,880 and 1,697,860

Step by Step Solution

1. Step 1: Write the proportion equation
   726,880 : 1,697,860 = 1,697,860 : x
2. Step 2: Convert to fraction form
   726,880/1,697,860 = 1,697,860/x
3. Step 3: Cross multiply
   726,880x = 1,697,860 × 1,697,860
4. Step 4: Simplify right side
   726,880x = 2,882,728,579,600
5. Step 5: Solve for x
   x = 2,882,728,579,600/726,880
6. Step 6: Final answer
   x = 3,965,893.38