Finding the Third Proportional to 81,885.38 and 173,612.81

Step by Step Solution

1. Step 1: Write the proportion equation
   81,885.38 : 173,612.81 = 173,612.81 : x
2. Step 2: Convert to fraction form
   81,885.38/173,612.81 = 173,612.81/x
3. Step 3: Cross multiply
   81,885.38x = 173,612.81 × 173,612.81
4. Step 4: Simplify right side
   81,885.38x = 30,141,408,664.16
5. Step 5: Solve for x
   x = 30,141,408,664.16/81,885.38
6. Step 6: Final answer
   x = 368,092.70