Finding the Third Proportional to 68,168.50 and 145,814

Step by Step Solution

1. Step 1: Write the proportion equation
   68,168.50 : 145,814 = 145,814 : x
2. Step 2: Convert to fraction form
   68,168.50/145,814 = 145,814/x
3. Step 3: Cross multiply
   68,168.50x = 145,814 × 145,814
4. Step 4: Simplify right side
   68,168.50x = 21,261,722,596
5. Step 5: Solve for x
   x = 21,261,722,596/68,168.50
6. Step 6: Final answer
   x = 311,899.52