Finding the Third Proportional to 1,307,808 and 1,999,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307,808 : 1,999,728 = 1,999,728 : x
2. Step 2: Convert to fraction form
   1,307,808/1,999,728 = 1,999,728/x
3. Step 3: Cross multiply
   1,307,808x = 1,999,728 × 1,999,728
4. Step 4: Simplify right side
   1,307,808x = 3,998,912,073,984
5. Step 5: Solve for x
   x = 3,998,912,073,984/1,307,808
6. Step 6: Final answer
   x = 3,057,721.07