Finding the Third Proportional to 65,770.31 and 142,049.81

Step by Step Solution

1. Step 1: Write the proportion equation
   65,770.31 : 142,049.81 = 142,049.81 : x
2. Step 2: Convert to fraction form
   65,770.31/142,049.81 = 142,049.81/x
3. Step 3: Cross multiply
   65,770.31x = 142,049.81 × 142,049.81
4. Step 4: Simplify right side
   65,770.31x = 20,178,149,231.29
5. Step 5: Solve for x
   x = 20,178,149,231.29/65,770.31
6. Step 6: Final answer
   x = 306,797.22