Finding the Third Proportional to 12,912.75 and 28,289.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912.75 : 28,289.25 = 28,289.25 : x
2. Step 2: Convert to fraction form
   12,912.75/28,289.25 = 28,289.25/x
3. Step 3: Cross multiply
   12,912.75x = 28,289.25 × 28,289.25
4. Step 4: Simplify right side
   12,912.75x = 800,281,665.56
5. Step 5: Solve for x
   x = 800,281,665.56/12,912.75
6. Step 6: Final answer
   x = 61,976.08