Finding the Third Proportional to 7,915.50 and 12,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,915.50 : 12,481.50 = 12,481.50 : x
2. Step 2: Convert to fraction form
   7,915.50/12,481.50 = 12,481.50/x
3. Step 3: Cross multiply
   7,915.50x = 12,481.50 × 12,481.50
4. Step 4: Simplify right side
   7,915.50x = 155,787,842.25
5. Step 5: Solve for x
   x = 155,787,842.25/7,915.50
6. Step 6: Final answer
   x = 19,681.36