Finding the Third Proportional to 145,280 and 222,144

Step by Step Solution

1. Step 1: Write the proportion equation
   145,280 : 222,144 = 222,144 : x
2. Step 2: Convert to fraction form
   145,280/222,144 = 222,144/x
3. Step 3: Cross multiply
   145,280x = 222,144 × 222,144
4. Step 4: Simplify right side
   145,280x = 49,347,956,736
5. Step 5: Solve for x
   x = 49,347,956,736/145,280
6. Step 6: Final answer
   x = 339,674.81