Finding the Third Proportional to 67,193 and 139,912

Step by Step Solution

1. Step 1: Write the proportion equation
   67,193 : 139,912 = 139,912 : x
2. Step 2: Convert to fraction form
   67,193/139,912 = 139,912/x
3. Step 3: Cross multiply
   67,193x = 139,912 × 139,912
4. Step 4: Simplify right side
   67,193x = 19,575,367,744
5. Step 5: Solve for x
   x = 19,575,367,744/67,193
6. Step 6: Final answer
   x = 291,330.46