Finding the Third Proportional to 2,620,275 and 5,555,478

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620,275 : 5,555,478 = 5,555,478 : x
2. Step 2: Convert to fraction form
   2,620,275/5,555,478 = 5,555,478/x
3. Step 3: Cross multiply
   2,620,275x = 5,555,478 × 5,555,478
4. Step 4: Simplify right side
   2,620,275x = 30,863,335,808,484
5. Step 5: Solve for x
   x = 30,863,335,808,484/2,620,275
6. Step 6: Final answer
   x = 11,778,662.85