Finding the Third Proportional to 13,085,640 and 19,863,936

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085,640 : 19,863,936 = 19,863,936 : x
2. Step 2: Convert to fraction form
   13,085,640/19,863,936 = 19,863,936/x
3. Step 3: Cross multiply
   13,085,640x = 19,863,936 × 19,863,936
4. Step 4: Simplify right side
   13,085,640x = 394,575,953,412,096
5. Step 5: Solve for x
   x = 394,575,953,412,096/13,085,640
6. Step 6: Final answer
   x = 30,153,355.39