Finding the Third Proportional to 200,870 and 275,436

Step by Step Solution

1. Step 1: Write the proportion equation
   200,870 : 275,436 = 275,436 : x
2. Step 2: Convert to fraction form
   200,870/275,436 = 275,436/x
3. Step 3: Cross multiply
   200,870x = 275,436 × 275,436
4. Step 4: Simplify right side
   200,870x = 75,864,990,096
5. Step 5: Solve for x
   x = 75,864,990,096/200,870
6. Step 6: Final answer
   x = 377,682.03