Finding the Third Proportional to 678,960 and 1,413,708

Step by Step Solution

1. Step 1: Write the proportion equation
   678,960 : 1,413,708 = 1,413,708 : x
2. Step 2: Convert to fraction form
   678,960/1,413,708 = 1,413,708/x
3. Step 3: Cross multiply
   678,960x = 1,413,708 × 1,413,708
4. Step 4: Simplify right side
   678,960x = 1,998,570,309,264
5. Step 5: Solve for x
   x = 1,998,570,309,264/678,960
6. Step 6: Final answer
   x = 2,943,575.92