Finding the Third Proportional to 143,496 and 222,642

Step by Step Solution

1. Step 1: Write the proportion equation
   143,496 : 222,642 = 222,642 : x
2. Step 2: Convert to fraction form
   143,496/222,642 = 222,642/x
3. Step 3: Cross multiply
   143,496x = 222,642 × 222,642
4. Step 4: Simplify right side
   143,496x = 49,569,460,164
5. Step 5: Solve for x
   x = 49,569,460,164/143,496
6. Step 6: Final answer
   x = 345,441.41