Finding the Third Proportional to 1,515,105 and 3,240,351

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,105 : 3,240,351 = 3,240,351 : x
2. Step 2: Convert to fraction form
   1,515,105/3,240,351 = 3,240,351/x
3. Step 3: Cross multiply
   1,515,105x = 3,240,351 × 3,240,351
4. Step 4: Simplify right side
   1,515,105x = 10,499,874,603,201
5. Step 5: Solve for x
   x = 10,499,874,603,201/1,515,105
6. Step 6: Final answer
   x = 6,930,129.99