Finding the Third Proportional to 13,408 and 28,040

Step by Step Solution

1. Step 1: Write the proportion equation
   13,408 : 28,040 = 28,040 : x
2. Step 2: Convert to fraction form
   13,408/28,040 = 28,040/x
3. Step 3: Cross multiply
   13,408x = 28,040 × 28,040
4. Step 4: Simplify right side
   13,408x = 786,241,600
5. Step 5: Solve for x
   x = 786,241,600/13,408
6. Step 6: Final answer
   x = 58,639.74