Finding the Third Proportional to 1,288,288 and 2,798,556

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,288 : 2,798,556 = 2,798,556 : x
2. Step 2: Convert to fraction form
   1,288,288/2,798,556 = 2,798,556/x
3. Step 3: Cross multiply
   1,288,288x = 2,798,556 × 2,798,556
4. Step 4: Simplify right side
   1,288,288x = 7,831,915,685,136
5. Step 5: Solve for x
   x = 7,831,915,685,136/1,288,288
6. Step 6: Final answer
   x = 6,079,320.53