Finding the Third Proportional to 665,664 and 1,436,288

Step by Step Solution

1. Step 1: Write the proportion equation
   665,664 : 1,436,288 = 1,436,288 : x
2. Step 2: Convert to fraction form
   665,664/1,436,288 = 1,436,288/x
3. Step 3: Cross multiply
   665,664x = 1,436,288 × 1,436,288
4. Step 4: Simplify right side
   665,664x = 2,062,923,218,944
5. Step 5: Solve for x
   x = 2,062,923,218,944/665,664
6. Step 6: Final answer
   x = 3,099,045.79