Finding the Third Proportional to 78,889.50 and 173,560.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,889.50 : 173,560.50 = 173,560.50 : x
2. Step 2: Convert to fraction form
   78,889.50/173,560.50 = 173,560.50/x
3. Step 3: Cross multiply
   78,889.50x = 173,560.50 × 173,560.50
4. Step 4: Simplify right side
   78,889.50x = 30,123,247,160.25
5. Step 5: Solve for x
   x = 30,123,247,160.25/78,889.50
6. Step 6: Final answer
   x = 381,841.02