Finding the Third Proportional to 143,417 and 210,950

Step by Step Solution

1. Step 1: Write the proportion equation
   143,417 : 210,950 = 210,950 : x
2. Step 2: Convert to fraction form
   143,417/210,950 = 210,950/x
3. Step 3: Cross multiply
   143,417x = 210,950 × 210,950
4. Step 4: Simplify right side
   143,417x = 44,499,902,500
5. Step 5: Solve for x
   x = 44,499,902,500/143,417
6. Step 6: Final answer
   x = 310,283.32