Finding the Third Proportional to 676,978 and 1,441,680

Step by Step Solution

1. Step 1: Write the proportion equation
   676,978 : 1,441,680 = 1,441,680 : x
2. Step 2: Convert to fraction form
   676,978/1,441,680 = 1,441,680/x
3. Step 3: Cross multiply
   676,978x = 1,441,680 × 1,441,680
4. Step 4: Simplify right side
   676,978x = 2,078,441,222,400
5. Step 5: Solve for x
   x = 2,078,441,222,400/676,978
6. Step 6: Final answer
   x = 3,070,175.43