Finding the Third Proportional to 10,013,154 and 20,557,131

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,154 : 20,557,131 = 20,557,131 : x
2. Step 2: Convert to fraction form
   10,013,154/20,557,131 = 20,557,131/x
3. Step 3: Cross multiply
   10,013,154x = 20,557,131 × 20,557,131
4. Step 4: Simplify right side
   10,013,154x = 422,595,634,951,161
5. Step 5: Solve for x
   x = 422,595,634,951,161/10,013,154
6. Step 6: Final answer
   x = 42,204,048.29