Finding the Third Proportional to 1,687,016 and 3,639,760

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687,016 : 3,639,760 = 3,639,760 : x
2. Step 2: Convert to fraction form
   1,687,016/3,639,760 = 3,639,760/x
3. Step 3: Cross multiply
   1,687,016x = 3,639,760 × 3,639,760
4. Step 4: Simplify right side
   1,687,016x = 13,247,852,857,600
5. Step 5: Solve for x
   x = 13,247,852,857,600/1,687,016
6. Step 6: Final answer
   x = 7,852,831.78