Finding the Third Proportional to 23,821 and 55,386

Step by Step Solution

1. Step 1: Write the proportion equation
   23,821 : 55,386 = 55,386 : x
2. Step 2: Convert to fraction form
   23,821/55,386 = 55,386/x
3. Step 3: Cross multiply
   23,821x = 55,386 × 55,386
4. Step 4: Simplify right side
   23,821x = 3,067,608,996
5. Step 5: Solve for x
   x = 3,067,608,996/23,821
6. Step 6: Final answer
   x = 128,777.51