Finding the Third Proportional to 648,882 and 867,978

Step by Step Solution

1. Step 1: Write the proportion equation
   648,882 : 867,978 = 867,978 : x
2. Step 2: Convert to fraction form
   648,882/867,978 = 867,978/x
3. Step 3: Cross multiply
   648,882x = 867,978 × 867,978
4. Step 4: Simplify right side
   648,882x = 753,385,808,484
5. Step 5: Solve for x
   x = 753,385,808,484/648,882
6. Step 6: Final answer
   x = 1,161,052.10