Finding the Third Proportional to 6,442.50 and 13,389

Step by Step Solution

1. Step 1: Write the proportion equation
   6,442.50 : 13,389 = 13,389 : x
2. Step 2: Convert to fraction form
   6,442.50/13,389 = 13,389/x
3. Step 3: Cross multiply
   6,442.50x = 13,389 × 13,389
4. Step 4: Simplify right side
   6,442.50x = 179,265,321
5. Step 5: Solve for x
   x = 179,265,321/6,442.50
6. Step 6: Final answer
   x = 27,825.43