Finding the Third Proportional to 143,136 and 214,650

Step by Step Solution

1. Step 1: Write the proportion equation
   143,136 : 214,650 = 214,650 : x
2. Step 2: Convert to fraction form
   143,136/214,650 = 214,650/x
3. Step 3: Cross multiply
   143,136x = 214,650 × 214,650
4. Step 4: Simplify right side
   143,136x = 46,074,622,500
5. Step 5: Solve for x
   x = 46,074,622,500/143,136
6. Step 6: Final answer
   x = 321,894.02