Finding the Third Proportional to 8,641.72 and 18,468.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,641.72 : 18,468.06 = 18,468.06 : x
2. Step 2: Convert to fraction form
   8,641.72/18,468.06 = 18,468.06/x
3. Step 3: Cross multiply
   8,641.72x = 18,468.06 × 18,468.06
4. Step 4: Simplify right side
   8,641.72x = 341,069,332.50
5. Step 5: Solve for x
   x = 341,069,332.50/8,641.72
6. Step 6: Final answer
   x = 39,467.77