Finding the Third Proportional to 68,806.31 and 143,854.69

Step by Step Solution

1. Step 1: Write the proportion equation
   68,806.31 : 143,854.69 = 143,854.69 : x
2. Step 2: Convert to fraction form
   68,806.31/143,854.69 = 143,854.69/x
3. Step 3: Cross multiply
   68,806.31x = 143,854.69 × 143,854.69
4. Step 4: Simplify right side
   68,806.31x = 20,694,171,115.72
5. Step 5: Solve for x
   x = 20,694,171,115.72/68,806.31
6. Step 6: Final answer
   x = 300,759.78