Finding the Third Proportional to 1,215,976 and 1,871,772

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,976 : 1,871,772 = 1,871,772 : x
2. Step 2: Convert to fraction form
   1,215,976/1,871,772 = 1,871,772/x
3. Step 3: Cross multiply
   1,215,976x = 1,871,772 × 1,871,772
4. Step 4: Simplify right side
   1,215,976x = 3,503,530,419,984
5. Step 5: Solve for x
   x = 3,503,530,419,984/1,215,976
6. Step 6: Final answer
   x = 2,881,249.65