Finding the Third Proportional to 143,340 and 222,402

Step by Step Solution

1. Step 1: Write the proportion equation
   143,340 : 222,402 = 222,402 : x
2. Step 2: Convert to fraction form
   143,340/222,402 = 222,402/x
3. Step 3: Cross multiply
   143,340x = 222,402 × 222,402
4. Step 4: Simplify right side
   143,340x = 49,462,649,604
5. Step 5: Solve for x
   x = 49,462,649,604/143,340
6. Step 6: Final answer
   x = 345,072.20