Finding the Third Proportional to 4,409,128 and 9,448,112

Step by Step Solution

1. Step 1: Write the proportion equation
   4,409,128 : 9,448,112 = 9,448,112 : x
2. Step 2: Convert to fraction form
   4,409,128/9,448,112 = 9,448,112/x
3. Step 3: Cross multiply
   4,409,128x = 9,448,112 × 9,448,112
4. Step 4: Simplify right side
   4,409,128x = 89,266,820,364,544
5. Step 5: Solve for x
   x = 89,266,820,364,544/4,409,128
6. Step 6: Final answer
   x = 20,245,912.65