Finding the Third Proportional to 65,165.50 and 142,805

Step by Step Solution

1. Step 1: Write the proportion equation
   65,165.50 : 142,805 = 142,805 : x
2. Step 2: Convert to fraction form
   65,165.50/142,805 = 142,805/x
3. Step 3: Cross multiply
   65,165.50x = 142,805 × 142,805
4. Step 4: Simplify right side
   65,165.50x = 20,393,268,025
5. Step 5: Solve for x
   x = 20,393,268,025/65,165.50
6. Step 6: Final answer
   x = 312,945.78