Finding the Third Proportional to 3,640,540 and 7,916,456

Step by Step Solution

1. Step 1: Write the proportion equation
   3,640,540 : 7,916,456 = 7,916,456 : x
2. Step 2: Convert to fraction form
   3,640,540/7,916,456 = 7,916,456/x
3. Step 3: Cross multiply
   3,640,540x = 7,916,456 × 7,916,456
4. Step 4: Simplify right side
   3,640,540x = 62,670,275,599,936
5. Step 5: Solve for x
   x = 62,670,275,599,936/3,640,540
6. Step 6: Final answer
   x = 17,214,554.87