Finding the Third Proportional to 42,450 and 89,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,450 : 89,545.50 = 89,545.50 : x
2. Step 2: Convert to fraction form
   42,450/89,545.50 = 89,545.50/x
3. Step 3: Cross multiply
   42,450x = 89,545.50 × 89,545.50
4. Step 4: Simplify right side
   42,450x = 8,018,396,570.25
5. Step 5: Solve for x
   x = 8,018,396,570.25/42,450
6. Step 6: Final answer
   x = 188,890.38