Finding the Third Proportional to 219,436 and 472,172

Step by Step Solution

1. Step 1: Write the proportion equation
   219,436 : 472,172 = 472,172 : x
2. Step 2: Convert to fraction form
   219,436/472,172 = 472,172/x
3. Step 3: Cross multiply
   219,436x = 472,172 × 472,172
4. Step 4: Simplify right side
   219,436x = 222,946,397,584
5. Step 5: Solve for x
   x = 222,946,397,584/219,436
6. Step 6: Final answer
   x = 1,015,997.36