Finding the Third Proportional to 143,016 and 214,248

Step by Step Solution

1. Step 1: Write the proportion equation
   143,016 : 214,248 = 214,248 : x
2. Step 2: Convert to fraction form
   143,016/214,248 = 214,248/x
3. Step 3: Cross multiply
   143,016x = 214,248 × 214,248
4. Step 4: Simplify right side
   143,016x = 45,902,205,504
5. Step 5: Solve for x
   x = 45,902,205,504/143,016
6. Step 6: Final answer
   x = 320,958.53