Finding the Third Proportional to 2,555,338 and 5,629,178

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555,338 : 5,629,178 = 5,629,178 : x
2. Step 2: Convert to fraction form
   2,555,338/5,629,178 = 5,629,178/x
3. Step 3: Cross multiply
   2,555,338x = 5,629,178 × 5,629,178
4. Step 4: Simplify right side
   2,555,338x = 31,687,644,955,684
5. Step 5: Solve for x
   x = 31,687,644,955,684/2,555,338
6. Step 6: Final answer
   x = 12,400,568.91