Finding the Third Proportional to 10,013,146.88 and 20,557,116

Step by Step Solution

1. Step 1: Write the proportion equation
   10,013,146.88 : 20,557,116 = 20,557,116 : x
2. Step 2: Convert to fraction form
   10,013,146.88/20,557,116 = 20,557,116/x
3. Step 3: Cross multiply
   10,013,146.88x = 20,557,116 × 20,557,116
4. Step 4: Simplify right side
   10,013,146.88x = 422,595,018,237,456
5. Step 5: Solve for x
   x = 422,595,018,237,456/10,013,146.88
6. Step 6: Final answer
   x = 42,204,016.73