Finding the Third Proportional to 528,212 and 1,138,556

Step by Step Solution

1. Step 1: Write the proportion equation
   528,212 : 1,138,556 = 1,138,556 : x
2. Step 2: Convert to fraction form
   528,212/1,138,556 = 1,138,556/x
3. Step 3: Cross multiply
   528,212x = 1,138,556 × 1,138,556
4. Step 4: Simplify right side
   528,212x = 1,296,309,765,136
5. Step 5: Solve for x
   x = 1,296,309,765,136/528,212
6. Step 6: Final answer
   x = 2,454,146.75