Finding the Third Proportional to 108,972 and 222,345

Step by Step Solution

1. Step 1: Write the proportion equation
   108,972 : 222,345 = 222,345 : x
2. Step 2: Convert to fraction form
   108,972/222,345 = 222,345/x
3. Step 3: Cross multiply
   108,972x = 222,345 × 222,345
4. Step 4: Simplify right side
   108,972x = 49,437,299,025
5. Step 5: Solve for x
   x = 49,437,299,025/108,972
6. Step 6: Final answer
   x = 453,669.74