Finding the Third Proportional to 4,648,144 and 9,968,667

Step by Step Solution

1. Step 1: Write the proportion equation
   4,648,144 : 9,968,667 = 9,968,667 : x
2. Step 2: Convert to fraction form
   4,648,144/9,968,667 = 9,968,667/x
3. Step 3: Cross multiply
   4,648,144x = 9,968,667 × 9,968,667
4. Step 4: Simplify right side
   4,648,144x = 99,374,321,756,889
5. Step 5: Solve for x
   x = 99,374,321,756,889/4,648,144
6. Step 6: Final answer
   x = 21,379,355.23