Finding the Third Proportional to 13,420 and 28,064

Step by Step Solution

1. Step 1: Write the proportion equation
   13,420 : 28,064 = 28,064 : x
2. Step 2: Convert to fraction form
   13,420/28,064 = 28,064/x
3. Step 3: Cross multiply
   13,420x = 28,064 × 28,064
4. Step 4: Simplify right side
   13,420x = 787,588,096
5. Step 5: Solve for x
   x = 787,588,096/13,420
6. Step 6: Final answer
   x = 58,687.64