Finding the Third Proportional to 142,503 and 222,381

Step by Step Solution

1. Step 1: Write the proportion equation
   142,503 : 222,381 = 222,381 : x
2. Step 2: Convert to fraction form
   142,503/222,381 = 222,381/x
3. Step 3: Cross multiply
   142,503x = 222,381 × 222,381
4. Step 4: Simplify right side
   142,503x = 49,453,309,161
5. Step 5: Solve for x
   x = 49,453,309,161/142,503
6. Step 6: Final answer
   x = 347,033.46