Finding the Third Proportional to 145,548 and 231,443

Step by Step Solution

1. Step 1: Write the proportion equation
   145,548 : 231,443 = 231,443 : x
2. Step 2: Convert to fraction form
   145,548/231,443 = 231,443/x
3. Step 3: Cross multiply
   145,548x = 231,443 × 231,443
4. Step 4: Simplify right side
   145,548x = 53,565,862,249
5. Step 5: Solve for x
   x = 53,565,862,249/145,548
6. Step 6: Final answer
   x = 368,028.84