Finding the Third Proportional to 8,434 and 12,148

Step by Step Solution

1. Step 1: Write the proportion equation
   8,434 : 12,148 = 12,148 : x
2. Step 2: Convert to fraction form
   8,434/12,148 = 12,148/x
3. Step 3: Cross multiply
   8,434x = 12,148 × 12,148
4. Step 4: Simplify right side
   8,434x = 147,573,904
5. Step 5: Solve for x
   x = 147,573,904/8,434
6. Step 6: Final answer
   x = 17,497.50