Finding the Third Proportional to 67,049.25 and 139,610.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67,049.25 : 139,610.25 = 139,610.25 : x
2. Step 2: Convert to fraction form
   67,049.25/139,610.25 = 139,610.25/x
3. Step 3: Cross multiply
   67,049.25x = 139,610.25 × 139,610.25
4. Step 4: Simplify right side
   67,049.25x = 19,491,021,905.06
5. Step 5: Solve for x
   x = 19,491,021,905.06/67,049.25
6. Step 6: Final answer
   x = 290,697.09