Finding the Third Proportional to 4,577.06 and 9,993.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,577.06 : 9,993.38 = 9,993.38 : x
2. Step 2: Convert to fraction form
   4,577.06/9,993.38 = 9,993.38/x
3. Step 3: Cross multiply
   4,577.06x = 9,993.38 × 9,993.38
4. Step 4: Simplify right side
   4,577.06x = 99,867,543.89
5. Step 5: Solve for x
   x = 99,867,543.89/4,577.06
6. Step 6: Final answer
   x = 21,819.13