Finding the Third Proportional to 67,589 and 139,462

Step by Step Solution

1. Step 1: Write the proportion equation
   67,589 : 139,462 = 139,462 : x
2. Step 2: Convert to fraction form
   67,589/139,462 = 139,462/x
3. Step 3: Cross multiply
   67,589x = 139,462 × 139,462
4. Step 4: Simplify right side
   67,589x = 19,449,649,444
5. Step 5: Solve for x
   x = 19,449,649,444/67,589
6. Step 6: Final answer
   x = 287,763.53