Finding the Third Proportional to 774,745 and 1,686,676

Step by Step Solution

1. Step 1: Write the proportion equation
   774,745 : 1,686,676 = 1,686,676 : x
2. Step 2: Convert to fraction form
   774,745/1,686,676 = 1,686,676/x
3. Step 3: Cross multiply
   774,745x = 1,686,676 × 1,686,676
4. Step 4: Simplify right side
   774,745x = 2,844,875,928,976
5. Step 5: Solve for x
   x = 2,844,875,928,976/774,745
6. Step 6: Final answer
   x = 3,672,015.86