Finding the Third Proportional to 13,399 and 28,310

Step by Step Solution

1. Step 1: Write the proportion equation
   13,399 : 28,310 = 28,310 : x
2. Step 2: Convert to fraction form
   13,399/28,310 = 28,310/x
3. Step 3: Cross multiply
   13,399x = 28,310 × 28,310
4. Step 4: Simplify right side
   13,399x = 801,456,100
5. Step 5: Solve for x
   x = 801,456,100/13,399
6. Step 6: Final answer
   x = 59,814.62