Finding the Third Proportional to 2,399.63 and 3,699.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.63 : 3,699.42 = 3,699.42 : x
2. Step 2: Convert to fraction form
   2,399.63/3,699.42 = 3,699.42/x
3. Step 3: Cross multiply
   2,399.63x = 3,699.42 × 3,699.42
4. Step 4: Simplify right side
   2,399.63x = 13,685,722.21
5. Step 5: Solve for x
   x = 13,685,722.21/2,399.63
6. Step 6: Final answer
   x = 5,703.28