Finding the Third Proportional to 9,655.88 and 12,897.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,655.88 : 12,897.56 = 12,897.56 : x
2. Step 2: Convert to fraction form
   9,655.88/12,897.56 = 12,897.56/x
3. Step 3: Cross multiply
   9,655.88x = 12,897.56 × 12,897.56
4. Step 4: Simplify right side
   9,655.88x = 166,347,118.44
5. Step 5: Solve for x
   x = 166,347,118.44/9,655.88
6. Step 6: Final answer
   x = 17,227.56