Finding the Third Proportional to 5,059.50 and 10,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,059.50 : 10,255.50 = 10,255.50 : x
2. Step 2: Convert to fraction form
   5,059.50/10,255.50 = 10,255.50/x
3. Step 3: Cross multiply
   5,059.50x = 10,255.50 × 10,255.50
4. Step 4: Simplify right side
   5,059.50x = 105,175,280.25
5. Step 5: Solve for x
   x = 105,175,280.25/5,059.50
6. Step 6: Final answer
   x = 20,787.68