Finding the Third Proportional to 3,853.83 and 8,321.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,853.83 : 8,321.91 = 8,321.91 : x
2. Step 2: Convert to fraction form
   3,853.83/8,321.91 = 8,321.91/x
3. Step 3: Cross multiply
   3,853.83x = 8,321.91 × 8,321.91
4. Step 4: Simplify right side
   3,853.83x = 69,254,123.63
5. Step 5: Solve for x
   x = 69,254,123.63/3,853.83
6. Step 6: Final answer
   x = 17,970.22