Finding the Third Proportional to 10,013,184 and 20,557,188

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,184 : 20,557,188 = 20,557,188 : x
2. Step 2: Convert to fraction form
   10,013,184/20,557,188 = 20,557,188/x
3. Step 3: Cross multiply
   10,013,184x = 20,557,188 × 20,557,188
4. Step 4: Simplify right side
   10,013,184x = 422,597,978,467,344
5. Step 5: Solve for x
   x = 422,597,978,467,344/10,013,184
6. Step 6: Final answer
   x = 42,204,155.89