Finding the Third Proportional to 678,894 and 1,413,570

Step by Step Solution

1. Step 1: Write the proportion equation
   678,894 : 1,413,570 = 1,413,570 : x
2. Step 2: Convert to fraction form
   678,894/1,413,570 = 1,413,570/x
3. Step 3: Cross multiply
   678,894x = 1,413,570 × 1,413,570
4. Step 4: Simplify right side
   678,894x = 1,998,180,144,900
5. Step 5: Solve for x
   x = 1,998,180,144,900/678,894
6. Step 6: Final answer
   x = 2,943,287.38