Finding the Third Proportional to 665,344 and 1,439,936

Step by Step Solution

1. Step 1: Write the proportion equation
   665,344 : 1,439,936 = 1,439,936 : x
2. Step 2: Convert to fraction form
   665,344/1,439,936 = 1,439,936/x
3. Step 3: Cross multiply
   665,344x = 1,439,936 × 1,439,936
4. Step 4: Simplify right side
   665,344x = 2,073,415,684,096
5. Step 5: Solve for x
   x = 2,073,415,684,096/665,344
6. Step 6: Final answer
   x = 3,116,306.28