Finding the Third Proportional to 776,816 and 1,661,568

Step by Step Solution

1. Step 1: Write the proportion equation
   776,816 : 1,661,568 = 1,661,568 : x
2. Step 2: Convert to fraction form
   776,816/1,661,568 = 1,661,568/x
3. Step 3: Cross multiply
   776,816x = 1,661,568 × 1,661,568
4. Step 4: Simplify right side
   776,816x = 2,760,808,218,624
5. Step 5: Solve for x
   x = 2,760,808,218,624/776,816
6. Step 6: Final answer
   x = 3,554,005.35