Finding the Third Proportional to 10,013,136 and 20,557,099

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,136 : 20,557,099 = 20,557,099 : x
2. Step 2: Convert to fraction form
   10,013,136/20,557,099 = 20,557,099/x
3. Step 3: Cross multiply
   10,013,136x = 20,557,099 × 20,557,099
4. Step 4: Simplify right side
   10,013,136x = 422,594,319,295,801
5. Step 5: Solve for x
   x = 422,594,319,295,801/10,013,136
6. Step 6: Final answer
   x = 42,203,992.76