Finding the Third Proportional to 144,388 and 222,221

Step by Step Solution

1. Step 1: Write the proportion equation
   144,388 : 222,221 = 222,221 : x
2. Step 2: Convert to fraction form
   144,388/222,221 = 222,221/x
3. Step 3: Cross multiply
   144,388x = 222,221 × 222,221
4. Step 4: Simplify right side
   144,388x = 49,382,172,841
5. Step 5: Solve for x
   x = 49,382,172,841/144,388
6. Step 6: Final answer
   x = 342,010.23