Finding the Third Proportional to 200,264 and 300,436

Step by Step Solution

1. Step 1: Write the proportion equation
   200,264 : 300,436 = 300,436 : x
2. Step 2: Convert to fraction form
   200,264/300,436 = 300,436/x
3. Step 3: Cross multiply
   200,264x = 300,436 × 300,436
4. Step 4: Simplify right side
   200,264x = 90,261,790,096
5. Step 5: Solve for x
   x = 90,261,790,096/200,264
6. Step 6: Final answer
   x = 450,714.01