Finding the Third Proportional to 2,147.77 and 5,018.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.77 : 5,018.20 = 5,018.20 : x
2. Step 2: Convert to fraction form
   2,147.77/5,018.20 = 5,018.20/x
3. Step 3: Cross multiply
   2,147.77x = 5,018.20 × 5,018.20
4. Step 4: Simplify right side
   2,147.77x = 25,182,362.60
5. Step 5: Solve for x
   x = 25,182,362.60/2,147.77
6. Step 6: Final answer
   x = 11,724.91