Finding the Third Proportional to 2,203,958 and 3,405,678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,203,958 : 3,405,678 = 3,405,678 : x
2. Step 2: Convert to fraction form
   2,203,958/3,405,678 = 3,405,678/x
3. Step 3: Cross multiply
   2,203,958x = 3,405,678 × 3,405,678
4. Step 4: Simplify right side
   2,203,958x = 11,598,642,639,684
5. Step 5: Solve for x
   x = 11,598,642,639,684/2,203,958
6. Step 6: Final answer
   x = 5,262,642.32