Finding the Third Proportional to 139,224 and 224,172

Step by Step Solution

1. Step 1: Write the proportion equation
   139,224 : 224,172 = 224,172 : x
2. Step 2: Convert to fraction form
   139,224/224,172 = 224,172/x
3. Step 3: Cross multiply
   139,224x = 224,172 × 224,172
4. Step 4: Simplify right side
   139,224x = 50,253,085,584
5. Step 5: Solve for x
   x = 50,253,085,584/139,224
6. Step 6: Final answer
   x = 360,951.31