Finding the Third Proportional to 10,289.53 and 13,976.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,289.53 : 13,976.30 = 13,976.30 : x
2. Step 2: Convert to fraction form
   10,289.53/13,976.30 = 13,976.30/x
3. Step 3: Cross multiply
   10,289.53x = 13,976.30 × 13,976.30
4. Step 4: Simplify right side
   10,289.53x = 195,336,874.34
5. Step 5: Solve for x
   x = 195,336,874.34/10,289.53
6. Step 6: Final answer
   x = 18,984.04