Finding the Third Proportional to 8,685.56 and 13,005.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,685.56 : 13,005.56 = 13,005.56 : x
2. Step 2: Convert to fraction form
   8,685.56/13,005.56 = 13,005.56/x
3. Step 3: Cross multiply
   8,685.56x = 13,005.56 × 13,005.56
4. Step 4: Simplify right side
   8,685.56x = 169,144,655.94
5. Step 5: Solve for x
   x = 169,144,655.94/8,685.56
6. Step 6: Final answer
   x = 19,474.23