Finding the Third Proportional to 2,260,449 and 3,390,678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260,449 : 3,390,678 = 3,390,678 : x
2. Step 2: Convert to fraction form
   2,260,449/3,390,678 = 3,390,678/x
3. Step 3: Cross multiply
   2,260,449x = 3,390,678 × 3,390,678
4. Step 4: Simplify right side
   2,260,449x = 11,496,697,299,684
5. Step 5: Solve for x
   x = 11,496,697,299,684/2,260,449
6. Step 6: Final answer
   x = 5,086,023.75