Finding the Third Proportional to 143,352 and 222,420

Step by Step Solution

1. Step 1: Write the proportion equation
   143,352 : 222,420 = 222,420 : x
2. Step 2: Convert to fraction form
   143,352/222,420 = 222,420/x
3. Step 3: Cross multiply
   143,352x = 222,420 × 222,420
4. Step 4: Simplify right side
   143,352x = 49,470,656,400
5. Step 5: Solve for x
   x = 49,470,656,400/143,352
6. Step 6: Final answer
   x = 345,099.17