Finding the Third Proportional to 145,436 and 308,452

Step by Step Solution

1. Step 1: Write the proportion equation
   145,436 : 308,452 = 308,452 : x
2. Step 2: Convert to fraction form
   145,436/308,452 = 308,452/x
3. Step 3: Cross multiply
   145,436x = 308,452 × 308,452
4. Step 4: Simplify right side
   145,436x = 95,142,636,304
5. Step 5: Solve for x
   x = 95,142,636,304/145,436
6. Step 6: Final answer
   x = 654,189.03