Finding the Third Proportional to 8,520.19 and 18,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,520.19 : 18,566.72 = 18,566.72 : x
2. Step 2: Convert to fraction form
   8,520.19/18,566.72 = 18,566.72/x
3. Step 3: Cross multiply
   8,520.19x = 18,566.72 × 18,566.72
4. Step 4: Simplify right side
   8,520.19x = 344,723,045.14
5. Step 5: Solve for x
   x = 344,723,045.14/8,520.19
6. Step 6: Final answer
   x = 40,459.56