Finding the Third Proportional to 2,555,364 and 5,587,656

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555,364 : 5,587,656 = 5,587,656 : x
2. Step 2: Convert to fraction form
   2,555,364/5,587,656 = 5,587,656/x
3. Step 3: Cross multiply
   2,555,364x = 5,587,656 × 5,587,656
4. Step 4: Simplify right side
   2,555,364x = 31,221,899,574,336
5. Step 5: Solve for x
   x = 31,221,899,574,336/2,555,364
6. Step 6: Final answer
   x = 12,218,180.88