Finding the Third Proportional to 4,395,680 and 9,128,104

Step by Step Solution

1. Step 1: Write the proportion equation
   4,395,680 : 9,128,104 = 9,128,104 : x
2. Step 2: Convert to fraction form
   4,395,680/9,128,104 = 9,128,104/x
3. Step 3: Cross multiply
   4,395,680x = 9,128,104 × 9,128,104
4. Step 4: Simplify right side
   4,395,680x = 83,322,282,634,816
5. Step 5: Solve for x
   x = 83,322,282,634,816/4,395,680
6. Step 6: Final answer
   x = 18,955,493.26