Finding the Third Proportional to 5,285 and 12,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,285 : 12,498.50 = 12,498.50 : x
2. Step 2: Convert to fraction form
   5,285/12,498.50 = 12,498.50/x
3. Step 3: Cross multiply
   5,285x = 12,498.50 × 12,498.50
4. Step 4: Simplify right side
   5,285x = 156,212,502.25
5. Step 5: Solve for x
   x = 156,212,502.25/5,285
6. Step 6: Final answer
   x = 29,557.71