Finding the Third Proportional to 142,490.25 and 222,362.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,490.25 : 222,362.25 = 222,362.25 : x
2. Step 2: Convert to fraction form
   142,490.25/222,362.25 = 222,362.25/x
3. Step 3: Cross multiply
   142,490.25x = 222,362.25 × 222,362.25
4. Step 4: Simplify right side
   142,490.25x = 49,444,970,225.06
5. Step 5: Solve for x
   x = 49,444,970,225.06/142,490.25
6. Step 6: Final answer
   x = 347,005.99