Finding the Third Proportional to 2,107.69 and 3,157.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.69 : 3,157.31 = 3,157.31 : x
2. Step 2: Convert to fraction form
   2,107.69/3,157.31 = 3,157.31/x
3. Step 3: Cross multiply
   2,107.69x = 3,157.31 × 3,157.31
4. Step 4: Simplify right side
   2,107.69x = 9,968,622.22
5. Step 5: Solve for x
   x = 9,968,622.22/2,107.69
6. Step 6: Final answer
   x = 4,729.65