Finding the Third Proportional to 109,272 and 222,554

Step by Step Solution

1. Step 1: Write the proportion equation
   109,272 : 222,554 = 222,554 : x
2. Step 2: Convert to fraction form
   109,272/222,554 = 222,554/x
3. Step 3: Cross multiply
   109,272x = 222,554 × 222,554
4. Step 4: Simplify right side
   109,272x = 49,530,282,916
5. Step 5: Solve for x
   x = 49,530,282,916/109,272
6. Step 6: Final answer
   x = 453,275.16