Finding the Third Proportional to 1,292,584 and 2,647,856

Step by Step Solution

1. Step 1: Write the proportion equation
   1,292,584 : 2,647,856 = 2,647,856 : x
2. Step 2: Convert to fraction form
   1,292,584/2,647,856 = 2,647,856/x
3. Step 3: Cross multiply
   1,292,584x = 2,647,856 × 2,647,856
4. Step 4: Simplify right side
   1,292,584x = 7,011,141,396,736
5. Step 5: Solve for x
   x = 7,011,141,396,736/1,292,584
6. Step 6: Final answer
   x = 5,424,128.26