Finding the Third Proportional to 3,557,220 and 7,789,008

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557,220 : 7,789,008 = 7,789,008 : x
2. Step 2: Convert to fraction form
   3,557,220/7,789,008 = 7,789,008/x
3. Step 3: Cross multiply
   3,557,220x = 7,789,008 × 7,789,008
4. Step 4: Simplify right side
   3,557,220x = 60,668,645,624,064
5. Step 5: Solve for x
   x = 60,668,645,624,064/3,557,220
6. Step 6: Final answer
   x = 17,055,072.68