Finding the Third Proportional to 2,546,400 and 5,540,640

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546,400 : 5,540,640 = 5,540,640 : x
2. Step 2: Convert to fraction form
   2,546,400/5,540,640 = 5,540,640/x
3. Step 3: Cross multiply
   2,546,400x = 5,540,640 × 5,540,640
4. Step 4: Simplify right side
   2,546,400x = 30,698,691,609,600
5. Step 5: Solve for x
   x = 30,698,691,609,600/2,546,400
6. Step 6: Final answer
   x = 12,055,722.44