Finding the Third Proportional to 143,400 and 222,770

Step by Step Solution

1. Step 1: Write the proportion equation
   143,400 : 222,770 = 222,770 : x
2. Step 2: Convert to fraction form
   143,400/222,770 = 222,770/x
3. Step 3: Cross multiply
   143,400x = 222,770 × 222,770
4. Step 4: Simplify right side
   143,400x = 49,626,472,900
5. Step 5: Solve for x
   x = 49,626,472,900/143,400
6. Step 6: Final answer
   x = 346,070.24