Finding the Third Proportional to 6,429 and 13,242

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429 : 13,242 = 13,242 : x
2. Step 2: Convert to fraction form
   6,429/13,242 = 13,242/x
3. Step 3: Cross multiply
   6,429x = 13,242 × 13,242
4. Step 4: Simplify right side
   6,429x = 175,350,564
5. Step 5: Solve for x
   x = 175,350,564/6,429
6. Step 6: Final answer
   x = 27,274.94