Finding the Third Proportional to 143,316 and 222,660

Step by Step Solution

1. Step 1: Write the proportion equation
   143,316 : 222,660 = 222,660 : x
2. Step 2: Convert to fraction form
   143,316/222,660 = 222,660/x
3. Step 3: Cross multiply
   143,316x = 222,660 × 222,660
4. Step 4: Simplify right side
   143,316x = 49,577,475,600
5. Step 5: Solve for x
   x = 49,577,475,600/143,316
6. Step 6: Final answer
   x = 345,931.20