Finding the Third Proportional to 100,436 and 222,900

Step by Step Solution

1. Step 1: Write the proportion equation
   100,436 : 222,900 = 222,900 : x
2. Step 2: Convert to fraction form
   100,436/222,900 = 222,900/x
3. Step 3: Cross multiply
   100,436x = 222,900 × 222,900
4. Step 4: Simplify right side
   100,436x = 49,684,410,000
5. Step 5: Solve for x
   x = 49,684,410,000/100,436
6. Step 6: Final answer
   x = 494,687.26