Finding the Third Proportional to 12,285 and 28,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,285 : 28,867.50 = 28,867.50 : x
2. Step 2: Convert to fraction form
   12,285/28,867.50 = 28,867.50/x
3. Step 3: Cross multiply
   12,285x = 28,867.50 × 28,867.50
4. Step 4: Simplify right side
   12,285x = 833,332,556.25
5. Step 5: Solve for x
   x = 833,332,556.25/12,285
6. Step 6: Final answer
   x = 67,833.34