Finding the Third Proportional to 89,744 and 139,348

Step by Step Solution

1. Step 1: Write the proportion equation
   89,744 : 139,348 = 139,348 : x
2. Step 2: Convert to fraction form
   89,744/139,348 = 139,348/x
3. Step 3: Cross multiply
   89,744x = 139,348 × 139,348
4. Step 4: Simplify right side
   89,744x = 19,417,865,104
5. Step 5: Solve for x
   x = 19,417,865,104/89,744
6. Step 6: Final answer
   x = 216,369.51