Finding the Third Proportional to 215,426 and 441,300

Step by Step Solution

1. Step 1: Write the proportion equation
   215,426 : 441,300 = 441,300 : x
2. Step 2: Convert to fraction form
   215,426/441,300 = 441,300/x
3. Step 3: Cross multiply
   215,426x = 441,300 × 441,300
4. Step 4: Simplify right side
   215,426x = 194,745,690,000
5. Step 5: Solve for x
   x = 194,745,690,000/215,426
6. Step 6: Final answer
   x = 904,002.72