Finding the Third Proportional to 4,483,200 and 9,728,480

Step by Step Solution

1. Step 1: Write the proportion equation
   4,483,200 : 9,728,480 = 9,728,480 : x
2. Step 2: Convert to fraction form
   4,483,200/9,728,480 = 9,728,480/x
3. Step 3: Cross multiply
   4,483,200x = 9,728,480 × 9,728,480
4. Step 4: Simplify right side
   4,483,200x = 94,643,323,110,400
5. Step 5: Solve for x
   x = 94,643,323,110,400/4,483,200
6. Step 6: Final answer
   x = 21,110,662.72