Finding the Third Proportional to 778,860 and 1,682,280

Step by Step Solution

1. Step 1: Write the proportion equation
   778,860 : 1,682,280 = 1,682,280 : x
2. Step 2: Convert to fraction form
   778,860/1,682,280 = 1,682,280/x
3. Step 3: Cross multiply
   778,860x = 1,682,280 × 1,682,280
4. Step 4: Simplify right side
   778,860x = 2,830,065,998,400
5. Step 5: Solve for x
   x = 2,830,065,998,400/778,860
6. Step 6: Final answer
   x = 3,633,600.39