Finding the Third Proportional to 2,545,328 and 5,489,180

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545,328 : 5,489,180 = 5,489,180 : x
2. Step 2: Convert to fraction form
   2,545,328/5,489,180 = 5,489,180/x
3. Step 3: Cross multiply
   2,545,328x = 5,489,180 × 5,489,180
4. Step 4: Simplify right side
   2,545,328x = 30,131,097,072,400
5. Step 5: Solve for x
   x = 30,131,097,072,400/2,545,328
6. Step 6: Final answer
   x = 11,837,805.22