Finding the Third Proportional to 68,810.81 and 143,863.69

Step by Step Solution

1. Step 1: Write the proportion equation
   68,810.81 : 143,863.69 = 143,863.69 : x
2. Step 2: Convert to fraction form
   68,810.81/143,863.69 = 143,863.69/x
3. Step 3: Cross multiply
   68,810.81x = 143,863.69 × 143,863.69
4. Step 4: Simplify right side
   68,810.81x = 20,696,760,581.10
5. Step 5: Solve for x
   x = 20,696,760,581.10/68,810.81
6. Step 6: Final answer
   x = 300,777.74