Finding the Third Proportional to 4,409,136 and 9,448,128

Step by Step Solution

1. Step 1: Write the proportion equation
   4,409,136 : 9,448,128 = 9,448,128 : x
2. Step 2: Convert to fraction form
   4,409,136/9,448,128 = 9,448,128/x
3. Step 3: Cross multiply
   4,409,136x = 9,448,128 × 9,448,128
4. Step 4: Simplify right side
   4,409,136x = 89,267,122,704,384
5. Step 5: Solve for x
   x = 89,267,122,704,384/4,409,136
6. Step 6: Final answer
   x = 20,245,944.49