Finding the Third Proportional to 17,647.88 and 38,621.81

Step by Step Solution

1. Step 1: Write the proportion equation
   17,647.88 : 38,621.81 = 38,621.81 : x
2. Step 2: Convert to fraction form
   17,647.88/38,621.81 = 38,621.81/x
3. Step 3: Cross multiply
   17,647.88x = 38,621.81 × 38,621.81
4. Step 4: Simplify right side
   17,647.88x = 1,491,644,400.79
5. Step 5: Solve for x
   x = 1,491,644,400.79/17,647.88
6. Step 6: Final answer
   x = 84,522.61