Finding the Third Proportional to 3,388,815 and 7,328,274

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388,815 : 7,328,274 = 7,328,274 : x
2. Step 2: Convert to fraction form
   3,388,815/7,328,274 = 7,328,274/x
3. Step 3: Cross multiply
   3,388,815x = 7,328,274 × 7,328,274
4. Step 4: Simplify right side
   3,388,815x = 53,703,599,819,076
5. Step 5: Solve for x
   x = 53,703,599,819,076/3,388,815
6. Step 6: Final answer
   x = 15,847,309.40