Finding the Third Proportional to 561,676 and 1,218,608

Step by Step Solution

1. Step 1: Write the proportion equation
   561,676 : 1,218,608 = 1,218,608 : x
2. Step 2: Convert to fraction form
   561,676/1,218,608 = 1,218,608/x
3. Step 3: Cross multiply
   561,676x = 1,218,608 × 1,218,608
4. Step 4: Simplify right side
   561,676x = 1,485,005,457,664
5. Step 5: Solve for x
   x = 1,485,005,457,664/561,676
6. Step 6: Final answer
   x = 2,643,882.70