Finding the Third Proportional to 131,436 and 200,406

Step by Step Solution

1. Step 1: Write the proportion equation
   131,436 : 200,406 = 200,406 : x
2. Step 2: Convert to fraction form
   131,436/200,406 = 200,406/x
3. Step 3: Cross multiply
   131,436x = 200,406 × 200,406
4. Step 4: Simplify right side
   131,436x = 40,162,564,836
5. Step 5: Solve for x
   x = 40,162,564,836/131,436
6. Step 6: Final answer
   x = 305,567.46