Finding the Third Proportional to 1,939.50 and 4,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.50 : 4,216.50 = 4,216.50 : x
2. Step 2: Convert to fraction form
   1,939.50/4,216.50 = 4,216.50/x
3. Step 3: Cross multiply
   1,939.50x = 4,216.50 × 4,216.50
4. Step 4: Simplify right side
   1,939.50x = 17,778,872.25
5. Step 5: Solve for x
   x = 17,778,872.25/1,939.50
6. Step 6: Final answer
   x = 9,166.73