Finding the Third Proportional to 20,647.41 and 54,940.78

Step by Step Solution

1. Step 1: Write the proportion equation
   20,647.41 : 54,940.78 = 54,940.78 : x
2. Step 2: Convert to fraction form
   20,647.41/54,940.78 = 54,940.78/x
3. Step 3: Cross multiply
   20,647.41x = 54,940.78 × 54,940.78
4. Step 4: Simplify right side
   20,647.41x = 3,018,489,444.36
5. Step 5: Solve for x
   x = 3,018,489,444.36/20,647.41
6. Step 6: Final answer
   x = 146,192.19