Finding the Third Proportional to 3,200.63 and 3,661.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.63 : 3,661.31 = 3,661.31 : x
2. Step 2: Convert to fraction form
   3,200.63/3,661.31 = 3,661.31/x
3. Step 3: Cross multiply
   3,200.63x = 3,661.31 × 3,661.31
4. Step 4: Simplify right side
   3,200.63x = 13,405,209.22
5. Step 5: Solve for x
   x = 13,405,209.22/3,200.63
6. Step 6: Final answer
   x = 4,188.31