Finding the Third Proportional to 2,501,640 and 4,878,864

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501,640 : 4,878,864 = 4,878,864 : x
2. Step 2: Convert to fraction form
   2,501,640/4,878,864 = 4,878,864/x
3. Step 3: Cross multiply
   2,501,640x = 4,878,864 × 4,878,864
4. Step 4: Simplify right side
   2,501,640x = 23,803,313,930,496
5. Step 5: Solve for x
   x = 23,803,313,930,496/2,501,640
6. Step 6: Final answer
   x = 9,515,083.68