Finding the Third Proportional to 4,560,968 and 9,915,800

Step by Step Solution

1. Step 1: Write the proportion equation
   4,560,968 : 9,915,800 = 9,915,800 : x
2. Step 2: Convert to fraction form
   4,560,968/9,915,800 = 9,915,800/x
3. Step 3: Cross multiply
   4,560,968x = 9,915,800 × 9,915,800
4. Step 4: Simplify right side
   4,560,968x = 98,323,089,640,000
5. Step 5: Solve for x
   x = 98,323,089,640,000/4,560,968
6. Step 6: Final answer
   x = 21,557,504.82