Finding the Third Proportional to 2,586,828 and 5,339,720

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,828 : 5,339,720 = 5,339,720 : x
2. Step 2: Convert to fraction form
   2,586,828/5,339,720 = 5,339,720/x
3. Step 3: Cross multiply
   2,586,828x = 5,339,720 × 5,339,720
4. Step 4: Simplify right side
   2,586,828x = 28,512,609,678,400
5. Step 5: Solve for x
   x = 28,512,609,678,400/2,586,828
6. Step 6: Final answer
   x = 11,022,228.64