Finding the Third Proportional to 79,321.50 and 172,845

Step by Step Solution

1. Step 1: Write the proportion equation
   79,321.50 : 172,845 = 172,845 : x
2. Step 2: Convert to fraction form
   79,321.50/172,845 = 172,845/x
3. Step 3: Cross multiply
   79,321.50x = 172,845 × 172,845
4. Step 4: Simplify right side
   79,321.50x = 29,875,394,025
5. Step 5: Solve for x
   x = 29,875,394,025/79,321.50
6. Step 6: Final answer
   x = 376,636.78