Finding the Third Proportional to 3,945.84 and 8,670.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.84 : 8,670.09 = 8,670.09 : x
2. Step 2: Convert to fraction form
   3,945.84/8,670.09 = 8,670.09/x
3. Step 3: Cross multiply
   3,945.84x = 8,670.09 × 8,670.09
4. Step 4: Simplify right side
   3,945.84x = 75,170,525.63
5. Step 5: Solve for x
   x = 75,170,525.63/3,945.84
6. Step 6: Final answer
   x = 19,050.56