Finding the Third Proportional to 215,436 and 441,600

Step by Step Solution

1. Step 1: Write the proportion equation
   215,436 : 441,600 = 441,600 : x
2. Step 2: Convert to fraction form
   215,436/441,600 = 441,600/x
3. Step 3: Cross multiply
   215,436x = 441,600 × 441,600
4. Step 4: Simplify right side
   215,436x = 195,010,560,000
5. Step 5: Solve for x
   x = 195,010,560,000/215,436
6. Step 6: Final answer
   x = 905,190.22