Finding the Third Proportional to 69,393 and 144,255

Step by Step Solution

1. Step 1: Write the proportion equation
   69,393 : 144,255 = 144,255 : x
2. Step 2: Convert to fraction form
   69,393/144,255 = 144,255/x
3. Step 3: Cross multiply
   69,393x = 144,255 × 144,255
4. Step 4: Simplify right side
   69,393x = 20,809,505,025
5. Step 5: Solve for x
   x = 20,809,505,025/69,393
6. Step 6: Final answer
   x = 299,879.02