Finding the Third Proportional to 143,059.50 and 210,204

Step by Step Solution

1. Step 1: Write the proportion equation
   143,059.50 : 210,204 = 210,204 : x
2. Step 2: Convert to fraction form
   143,059.50/210,204 = 210,204/x
3. Step 3: Cross multiply
   143,059.50x = 210,204 × 210,204
4. Step 4: Simplify right side
   143,059.50x = 44,185,721,616
5. Step 5: Solve for x
   x = 44,185,721,616/143,059.50
6. Step 6: Final answer
   x = 308,862.55