Finding the Third Proportional to 1,292,586 and 2,647,860

Step by Step Solution

1. Step 1: Write the proportion equation
   1,292,586 : 2,647,860 = 2,647,860 : x
2. Step 2: Convert to fraction form
   1,292,586/2,647,860 = 2,647,860/x
3. Step 3: Cross multiply
   1,292,586x = 2,647,860 × 2,647,860
4. Step 4: Simplify right side
   1,292,586x = 7,011,162,579,600
5. Step 5: Solve for x
   x = 7,011,162,579,600/1,292,586
6. Step 6: Final answer
   x = 5,424,136.25