Finding the Third Proportional to 10,013,150 and 20,557,122

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,150 : 20,557,122 = 20,557,122 : x
2. Step 2: Convert to fraction form
   10,013,150/20,557,122 = 20,557,122/x
3. Step 3: Cross multiply
   10,013,150x = 20,557,122 × 20,557,122
4. Step 4: Simplify right side
   10,013,150x = 422,595,264,922,884
5. Step 5: Solve for x
   x = 422,595,264,922,884/10,013,150
6. Step 6: Final answer
   x = 42,204,028.20