Finding the Third Proportional to 55,722 and 123,108

Step by Step Solution

1. Step 1: Write the proportion equation
   55,722 : 123,108 = 123,108 : x
2. Step 2: Convert to fraction form
   55,722/123,108 = 123,108/x
3. Step 3: Cross multiply
   55,722x = 123,108 × 123,108
4. Step 4: Simplify right side
   55,722x = 15,155,579,664
5. Step 5: Solve for x
   x = 15,155,579,664/55,722
6. Step 6: Final answer
   x = 271,985.57