Finding the Third Proportional to 53,279 and 123,021.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,279 : 123,021.75 = 123,021.75 : x
2. Step 2: Convert to fraction form
   53,279/123,021.75 = 123,021.75/x
3. Step 3: Cross multiply
   53,279x = 123,021.75 × 123,021.75
4. Step 4: Simplify right side
   53,279x = 15,134,350,973.06
5. Step 5: Solve for x
   x = 15,134,350,973.06/53,279
6. Step 6: Final answer
   x = 284,058.47