Finding the Third Proportional to 677,860 and 1,338,712

Step by Step Solution

1. Step 1: Write the proportion equation
   677,860 : 1,338,712 = 1,338,712 : x
2. Step 2: Convert to fraction form
   677,860/1,338,712 = 1,338,712/x
3. Step 3: Cross multiply
   677,860x = 1,338,712 × 1,338,712
4. Step 4: Simplify right side
   677,860x = 1,792,149,818,944
5. Step 5: Solve for x
   x = 1,792,149,818,944/677,860
6. Step 6: Final answer
   x = 2,643,834.74