Finding the Third Proportional to 6,439 and 13,570

Step by Step Solution

1. Step 1: Write the proportion equation
   6,439 : 13,570 = 13,570 : x
2. Step 2: Convert to fraction form
   6,439/13,570 = 13,570/x
3. Step 3: Cross multiply
   6,439x = 13,570 × 13,570
4. Step 4: Simplify right side
   6,439x = 184,144,900
5. Step 5: Solve for x
   x = 184,144,900/6,439
6. Step 6: Final answer
   x = 28,598.37