Finding the Third Proportional to 5,429 and 12,924

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429 : 12,924 = 12,924 : x
2. Step 2: Convert to fraction form
   5,429/12,924 = 12,924/x
3. Step 3: Cross multiply
   5,429x = 12,924 × 12,924
4. Step 4: Simplify right side
   5,429x = 167,029,776
5. Step 5: Solve for x
   x = 167,029,776/5,429
6. Step 6: Final answer
   x = 30,766.21