Finding the Third Proportional to 142,489.50 and 222,361

Step by Step Solution

1. Step 1: Write the proportion equation
   142,489.50 : 222,361 = 222,361 : x
2. Step 2: Convert to fraction form
   142,489.50/222,361 = 222,361/x
3. Step 3: Cross multiply
   142,489.50x = 222,361 × 222,361
4. Step 4: Simplify right side
   142,489.50x = 49,444,414,321
5. Step 5: Solve for x
   x = 49,444,414,321/142,489.50
6. Step 6: Final answer
   x = 347,003.91