Finding the Third Proportional to 81,120.50 and 173,450

Step by Step Solution

1. Step 1: Write the proportion equation
   81,120.50 : 173,450 = 173,450 : x
2. Step 2: Convert to fraction form
   81,120.50/173,450 = 173,450/x
3. Step 3: Cross multiply
   81,120.50x = 173,450 × 173,450
4. Step 4: Simplify right side
   81,120.50x = 30,084,902,500
5. Step 5: Solve for x
   x = 30,084,902,500/81,120.50
6. Step 6: Final answer
   x = 370,866.83