Finding the Third Proportional to 774,716 and 1,686,616

Step by Step Solution

1. Step 1: Write the proportion equation
   774,716 : 1,686,616 = 1,686,616 : x
2. Step 2: Convert to fraction form
   774,716/1,686,616 = 1,686,616/x
3. Step 3: Cross multiply
   774,716x = 1,686,616 × 1,686,616
4. Step 4: Simplify right side
   774,716x = 2,844,673,531,456
5. Step 5: Solve for x
   x = 2,844,673,531,456/774,716
6. Step 6: Final answer
   x = 3,671,892.06