Finding the Third Proportional to 1,686,960 and 3,643,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,960 : 3,643,728 = 3,643,728 : x
2. Step 2: Convert to fraction form
   1,686,960/3,643,728 = 3,643,728/x
3. Step 3: Cross multiply
   1,686,960x = 3,643,728 × 3,643,728
4. Step 4: Simplify right side
   1,686,960x = 13,276,753,737,984
5. Step 5: Solve for x
   x = 13,276,753,737,984/1,686,960
6. Step 6: Final answer
   x = 7,870,224.39