Finding the Third Proportional to 646,744 and 1,396,736

Step by Step Solution

1. Step 1: Write the proportion equation
   646,744 : 1,396,736 = 1,396,736 : x
2. Step 2: Convert to fraction form
   646,744/1,396,736 = 1,396,736/x
3. Step 3: Cross multiply
   646,744x = 1,396,736 × 1,396,736
4. Step 4: Simplify right side
   646,744x = 1,950,871,453,696
5. Step 5: Solve for x
   x = 1,950,871,453,696/646,744
6. Step 6: Final answer
   x = 3,016,450.80