Finding the Third Proportional to 648,885 and 867,981

Step by Step Solution

1. Step 1: Write the proportion equation
   648,885 : 867,981 = 867,981 : x
2. Step 2: Convert to fraction form
   648,885/867,981 = 867,981/x
3. Step 3: Cross multiply
   648,885x = 867,981 × 867,981
4. Step 4: Simplify right side
   648,885x = 753,391,016,361
5. Step 5: Solve for x
   x = 753,391,016,361/648,885
6. Step 6: Final answer
   x = 1,161,054.76