Finding the Third Proportional to 1,287,856 and 2,797,144

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,856 : 2,797,144 = 2,797,144 : x
2. Step 2: Convert to fraction form
   1,287,856/2,797,144 = 2,797,144/x
3. Step 3: Cross multiply
   1,287,856x = 2,797,144 × 2,797,144
4. Step 4: Simplify right side
   1,287,856x = 7,824,014,556,736
5. Step 5: Solve for x
   x = 7,824,014,556,736/1,287,856
6. Step 6: Final answer
   x = 6,075,224.68