Finding the Third Proportional to 10,013,142 and 20,557,104

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,142 : 20,557,104 = 20,557,104 : x
2. Step 2: Convert to fraction form
   10,013,142/20,557,104 = 20,557,104/x
3. Step 3: Cross multiply
   10,013,142x = 20,557,104 × 20,557,104
4. Step 4: Simplify right side
   10,013,142x = 422,594,524,866,816
5. Step 5: Solve for x
   x = 422,594,524,866,816/10,013,142
6. Step 6: Final answer
   x = 42,203,988.01