Finding the Third Proportional to 143,018 and 214,460

Step by Step Solution

1. Step 1: Write the proportion equation
   143,018 : 214,460 = 214,460 : x
2. Step 2: Convert to fraction form
   143,018/214,460 = 214,460/x
3. Step 3: Cross multiply
   143,018x = 214,460 × 214,460
4. Step 4: Simplify right side
   143,018x = 45,993,091,600
5. Step 5: Solve for x
   x = 45,993,091,600/143,018
6. Step 6: Final answer
   x = 321,589.53