Finding the Third Proportional to 6,403.50 and 13,410

Step by Step Solution

1. Step 1: Write the proportion equation
   6,403.50 : 13,410 = 13,410 : x
2. Step 2: Convert to fraction form
   6,403.50/13,410 = 13,410/x
3. Step 3: Cross multiply
   6,403.50x = 13,410 × 13,410
4. Step 4: Simplify right side
   6,403.50x = 179,828,100
5. Step 5: Solve for x
   x = 179,828,100/6,403.50
6. Step 6: Final answer
   x = 28,082.78