Finding the Third Proportional to 3,115,440 and 4,550,616

Step by Step Solution

1. Step 1: Write the proportion equation
   3,115,440 : 4,550,616 = 4,550,616 : x
2. Step 2: Convert to fraction form
   3,115,440/4,550,616 = 4,550,616/x
3. Step 3: Cross multiply
   3,115,440x = 4,550,616 × 4,550,616
4. Step 4: Simplify right side
   3,115,440x = 20,708,105,979,456
5. Step 5: Solve for x
   x = 20,708,105,979,456/3,115,440
6. Step 6: Final answer
   x = 6,646,928.20