Finding the Third Proportional to 3,557,208 and 7,789,040

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557,208 : 7,789,040 = 7,789,040 : x
2. Step 2: Convert to fraction form
   3,557,208/7,789,040 = 7,789,040/x
3. Step 3: Cross multiply
   3,557,208x = 7,789,040 × 7,789,040
4. Step 4: Simplify right side
   3,557,208x = 60,669,144,121,600
5. Step 5: Solve for x
   x = 60,669,144,121,600/3,557,208
6. Step 6: Final answer
   x = 17,055,270.35