Finding the Third Proportional to 68,811 and 143,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,811 : 143,863.50 = 143,863.50 : x
2. Step 2: Convert to fraction form
   68,811/143,863.50 = 143,863.50/x
3. Step 3: Cross multiply
   68,811x = 143,863.50 × 143,863.50
4. Step 4: Simplify right side
   68,811x = 20,696,706,632.25
5. Step 5: Solve for x
   x = 20,696,706,632.25/68,811
6. Step 6: Final answer
   x = 300,776.14