Finding the Third Proportional to 12,878.50 and 28,217.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,878.50 : 28,217.25 = 28,217.25 : x
2. Step 2: Convert to fraction form
   12,878.50/28,217.25 = 28,217.25/x
3. Step 3: Cross multiply
   12,878.50x = 28,217.25 × 28,217.25
4. Step 4: Simplify right side
   12,878.50x = 796,213,197.56
5. Step 5: Solve for x
   x = 796,213,197.56/12,878.50
6. Step 6: Final answer
   x = 61,824.99