Finding the Third Proportional to 396,614 and 871,960

Step by Step Solution

1. Step 1: Write the proportion equation
   396,614 : 871,960 = 871,960 : x
2. Step 2: Convert to fraction form
   396,614/871,960 = 871,960/x
3. Step 3: Cross multiply
   396,614x = 871,960 × 871,960
4. Step 4: Simplify right side
   396,614x = 760,314,241,600
5. Step 5: Solve for x
   x = 760,314,241,600/396,614
6. Step 6: Final answer
   x = 1,917,013.12