Finding the Third Proportional to 170,216 and 269,404

Step by Step Solution

1. Step 1: Write the proportion equation
   170,216 : 269,404 = 269,404 : x
2. Step 2: Convert to fraction form
   170,216/269,404 = 269,404/x
3. Step 3: Cross multiply
   170,216x = 269,404 × 269,404
4. Step 4: Simplify right side
   170,216x = 72,578,515,216
5. Step 5: Solve for x
   x = 72,578,515,216/170,216
6. Step 6: Final answer
   x = 426,390.68