Finding the Third Proportional to 67,085.50 and 143,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,085.50 : 143,564.50 = 143,564.50 : x
2. Step 2: Convert to fraction form
   67,085.50/143,564.50 = 143,564.50/x
3. Step 3: Cross multiply
   67,085.50x = 143,564.50 × 143,564.50
4. Step 4: Simplify right side
   67,085.50x = 20,610,765,660.25
5. Step 5: Solve for x
   x = 20,610,765,660.25/67,085.50
6. Step 6: Final answer
   x = 307,231.30