Finding the Third Proportional to 1,909,440 and 4,159,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909,440 : 4,159,728 = 4,159,728 : x
2. Step 2: Convert to fraction form
   1,909,440/4,159,728 = 4,159,728/x
3. Step 3: Cross multiply
   1,909,440x = 4,159,728 × 4,159,728
4. Step 4: Simplify right side
   1,909,440x = 17,303,337,033,984
5. Step 5: Solve for x
   x = 17,303,337,033,984/1,909,440
6. Step 6: Final answer
   x = 9,061,995.68