Finding the Third Proportional to 131,436 and 285,015.38

Step by Step Solution

1. Step 1: Write the proportion equation
   131,436 : 285,015.38 = 285,015.38 : x
2. Step 2: Convert to fraction form
   131,436/285,015.38 = 285,015.38/x
3. Step 3: Cross multiply
   131,436x = 285,015.38 × 285,015.38
4. Step 4: Simplify right side
   131,436x = 81,233,763,986.39
5. Step 5: Solve for x
   x = 81,233,763,986.39/131,436
6. Step 6: Final answer
   x = 618,048.05