Finding the Third Proportional to 18,021.87 and 39,552.05

Step by Step Solution

1. Step 1: Write the proportion equation
   18,021.87 : 39,552.05 = 39,552.05 : x
2. Step 2: Convert to fraction form
   18,021.87/39,552.05 = 39,552.05/x
3. Step 3: Cross multiply
   18,021.87x = 39,552.05 × 39,552.05
4. Step 4: Simplify right side
   18,021.87x = 1,564,364,412.00
5. Step 5: Solve for x
   x = 1,564,364,412.00/18,021.87
6. Step 6: Final answer
   x = 86,803.68