Finding the Third Proportional to 121,383 and 269,291.25

Step by Step Solution

1. Step 1: Write the proportion equation
   121,383 : 269,291.25 = 269,291.25 : x
2. Step 2: Convert to fraction form
   121,383/269,291.25 = 269,291.25/x
3. Step 3: Cross multiply
   121,383x = 269,291.25 × 269,291.25
4. Step 4: Simplify right side
   121,383x = 72,517,777,326.56
5. Step 5: Solve for x
   x = 72,517,777,326.56/121,383
6. Step 6: Final answer
   x = 597,429.44