Finding the Third Proportional to 6,429 and 13,458

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429 : 13,458 = 13,458 : x
2. Step 2: Convert to fraction form
   6,429/13,458 = 13,458/x
3. Step 3: Cross multiply
   6,429x = 13,458 × 13,458
4. Step 4: Simplify right side
   6,429x = 181,117,764
5. Step 5: Solve for x
   x = 181,117,764/6,429
6. Step 6: Final answer
   x = 28,172.00