Finding the Third Proportional to 3,478,275 and 5,519,718

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478,275 : 5,519,718 = 5,519,718 : x
2. Step 2: Convert to fraction form
   3,478,275/5,519,718 = 5,519,718/x
3. Step 3: Cross multiply
   3,478,275x = 5,519,718 × 5,519,718
4. Step 4: Simplify right side
   3,478,275x = 30,467,286,799,524
5. Step 5: Solve for x
   x = 30,467,286,799,524/3,478,275
6. Step 6: Final answer
   x = 8,759,309.37