Finding the Third Proportional to 648,872 and 867,960

Step by Step Solution

1. Step 1: Write the proportion equation
   648,872 : 867,960 = 867,960 : x
2. Step 2: Convert to fraction form
   648,872/867,960 = 867,960/x
3. Step 3: Cross multiply
   648,872x = 867,960 × 867,960
4. Step 4: Simplify right side
   648,872x = 753,354,561,600
5. Step 5: Solve for x
   x = 753,354,561,600/648,872
6. Step 6: Final answer
   x = 1,161,021.84