Finding the Third Proportional to 3,985.50 and 8,775.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.50 : 8,775.75 = 8,775.75 : x
2. Step 2: Convert to fraction form
   3,985.50/8,775.75 = 8,775.75/x
3. Step 3: Cross multiply
   3,985.50x = 8,775.75 × 8,775.75
4. Step 4: Simplify right side
   3,985.50x = 77,013,788.06
5. Step 5: Solve for x
   x = 77,013,788.06/3,985.50
6. Step 6: Final answer
   x = 19,323.49