Finding the Third Proportional to 3,557.81 and 7,773.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.81 : 7,773.19 = 7,773.19 : x
2. Step 2: Convert to fraction form
   3,557.81/7,773.19 = 7,773.19/x
3. Step 3: Cross multiply
   3,557.81x = 7,773.19 × 7,773.19
4. Step 4: Simplify right side
   3,557.81x = 60,422,443.91
5. Step 5: Solve for x
   x = 60,422,443.91/3,557.81
6. Step 6: Final answer
   x = 16,983.03