Finding the Third Proportional to 4,483,288 and 9,728,656

Step by Step Solution

1. Step 1: Write the proportion equation
   4,483,288 : 9,728,656 = 9,728,656 : x
2. Step 2: Convert to fraction form
   4,483,288/9,728,656 = 9,728,656/x
3. Step 3: Cross multiply
   4,483,288x = 9,728,656 × 9,728,656
4. Step 4: Simplify right side
   4,483,288x = 94,646,747,566,336
5. Step 5: Solve for x
   x = 94,646,747,566,336/4,483,288
6. Step 6: Final answer
   x = 21,111,012.18