Finding the Third Proportional to 89,158 and 139,192

Step by Step Solution

1. Step 1: Write the proportion equation
   89,158 : 139,192 = 139,192 : x
2. Step 2: Convert to fraction form
   89,158/139,192 = 139,192/x
3. Step 3: Cross multiply
   89,158x = 139,192 × 139,192
4. Step 4: Simplify right side
   89,158x = 19,374,412,864
5. Step 5: Solve for x
   x = 19,374,412,864/89,158
6. Step 6: Final answer
   x = 217,304.26