Finding the Third Proportional to 2,406,879 and 5,286,177

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406,879 : 5,286,177 = 5,286,177 : x
2. Step 2: Convert to fraction form
   2,406,879/5,286,177 = 5,286,177/x
3. Step 3: Cross multiply
   2,406,879x = 5,286,177 × 5,286,177
4. Step 4: Simplify right side
   2,406,879x = 27,943,667,275,329
5. Step 5: Solve for x
   x = 27,943,667,275,329/2,406,879
6. Step 6: Final answer
   x = 11,609,917.77