Finding the Third Proportional to 67,040 and 139,592

Step by Step Solution

1. Step 1: Write the proportion equation
   67,040 : 139,592 = 139,592 : x
2. Step 2: Convert to fraction form
   67,040/139,592 = 139,592/x
3. Step 3: Cross multiply
   67,040x = 139,592 × 139,592
4. Step 4: Simplify right side
   67,040x = 19,485,926,464
5. Step 5: Solve for x
   x = 19,485,926,464/67,040
6. Step 6: Final answer
   x = 290,661.19