Finding the Third Proportional to 4,409,144 and 9,448,138

Step by Step Solution

1. Step 1: Write the proportion equation
   4,409,144 : 9,448,138 = 9,448,138 : x
2. Step 2: Convert to fraction form
   4,409,144/9,448,138 = 9,448,138/x
3. Step 3: Cross multiply
   4,409,144x = 9,448,138 × 9,448,138
4. Step 4: Simplify right side
   4,409,144x = 89,267,311,667,044
5. Step 5: Solve for x
   x = 89,267,311,667,044/4,409,144
6. Step 6: Final answer
   x = 20,245,950.61