Finding the Third Proportional to 670,728 and 996,978

Step by Step Solution

1. Step 1: Write the proportion equation
   670,728 : 996,978 = 996,978 : x
2. Step 2: Convert to fraction form
   670,728/996,978 = 996,978/x
3. Step 3: Cross multiply
   670,728x = 996,978 × 996,978
4. Step 4: Simplify right side
   670,728x = 993,965,132,484
5. Step 5: Solve for x
   x = 993,965,132,484/670,728
6. Step 6: Final answer
   x = 1,481,919.84