Finding the Third Proportional to 2,568,816 and 5,646,123

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568,816 : 5,646,123 = 5,646,123 : x
2. Step 2: Convert to fraction form
   2,568,816/5,646,123 = 5,646,123/x
3. Step 3: Cross multiply
   2,568,816x = 5,646,123 × 5,646,123
4. Step 4: Simplify right side
   2,568,816x = 31,878,704,931,129
5. Step 5: Solve for x
   x = 31,878,704,931,129/2,568,816
6. Step 6: Final answer
   x = 12,409,882.58