Finding the Third Proportional to 143,983.50 and 214,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,983.50 : 214,474.50 = 214,474.50 : x
2. Step 2: Convert to fraction form
   143,983.50/214,474.50 = 214,474.50/x
3. Step 3: Cross multiply
   143,983.50x = 214,474.50 × 214,474.50
4. Step 4: Simplify right side
   143,983.50x = 45,999,311,150.25
5. Step 5: Solve for x
   x = 45,999,311,150.25/143,983.50
6. Step 6: Final answer
   x = 319,476.27