Finding the Third Proportional to 142,489.50 and 222,360

Step by Step Solution

1. Step 1: Write the proportion equation
   142,489.50 : 222,360 = 222,360 : x
2. Step 2: Convert to fraction form
   142,489.50/222,360 = 222,360/x
3. Step 3: Cross multiply
   142,489.50x = 222,360 × 222,360
4. Step 4: Simplify right side
   142,489.50x = 49,443,969,600
5. Step 5: Solve for x
   x = 49,443,969,600/142,489.50
6. Step 6: Final answer
   x = 347,000.79