Finding the Third Proportional to 6,456.59 and 13,689.63

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.59 : 13,689.63 = 13,689.63 : x
2. Step 2: Convert to fraction form
   6,456.59/13,689.63 = 13,689.63/x
3. Step 3: Cross multiply
   6,456.59x = 13,689.63 × 13,689.63
4. Step 4: Simplify right side
   6,456.59x = 187,406,046.54
5. Step 5: Solve for x
   x = 187,406,046.54/6,456.59
6. Step 6: Final answer
   x = 29,025.56