Finding the Third Proportional to 4,544,984 and 9,728,390

Step by Step Solution

1. Step 1: Write the proportion equation
   4,544,984 : 9,728,390 = 9,728,390 : x
2. Step 2: Convert to fraction form
   4,544,984/9,728,390 = 9,728,390/x
3. Step 3: Cross multiply
   4,544,984x = 9,728,390 × 9,728,390
4. Step 4: Simplify right side
   4,544,984x = 94,641,571,992,100
5. Step 5: Solve for x
   x = 94,641,571,992,100/4,544,984
6. Step 6: Final answer
   x = 20,823,301.47