Finding the Third Proportional to 68,016.50 and 145,861

Step by Step Solution

1. Step 1: Write the proportion equation
   68,016.50 : 145,861 = 145,861 : x
2. Step 2: Convert to fraction form
   68,016.50/145,861 = 145,861/x
3. Step 3: Cross multiply
   68,016.50x = 145,861 × 145,861
4. Step 4: Simplify right side
   68,016.50x = 21,275,431,321
5. Step 5: Solve for x
   x = 21,275,431,321/68,016.50
6. Step 6: Final answer
   x = 312,798.09