Finding the Third Proportional to 4,483,238 and 9,728,556

Step by Step Solution

1. Step 1: Write the proportion equation
   4,483,238 : 9,728,556 = 9,728,556 : x
2. Step 2: Convert to fraction form
   4,483,238/9,728,556 = 9,728,556/x
3. Step 3: Cross multiply
   4,483,238x = 9,728,556 × 9,728,556
4. Step 4: Simplify right side
   4,483,238x = 94,644,801,845,136
5. Step 5: Solve for x
   x = 94,644,801,845,136/4,483,238
6. Step 6: Final answer
   x = 21,110,813.62