Finding the Third Proportional to 677,844 and 1,338,680

Step by Step Solution

1. Step 1: Write the proportion equation
   677,844 : 1,338,680 = 1,338,680 : x
2. Step 2: Convert to fraction form
   677,844/1,338,680 = 1,338,680/x
3. Step 3: Cross multiply
   677,844x = 1,338,680 × 1,338,680
4. Step 4: Simplify right side
   677,844x = 1,792,064,142,400
5. Step 5: Solve for x
   x = 1,792,064,142,400/677,844
6. Step 6: Final answer
   x = 2,643,770.75