Finding the Third Proportional to 8,145.56 and 12,365.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.56 : 12,365.16 = 12,365.16 : x
2. Step 2: Convert to fraction form
   8,145.56/12,365.16 = 12,365.16/x
3. Step 3: Cross multiply
   8,145.56x = 12,365.16 × 12,365.16
4. Step 4: Simplify right side
   8,145.56x = 152,897,089.09
5. Step 5: Solve for x
   x = 152,897,089.09/8,145.56
6. Step 6: Final answer
   x = 18,770.60