Finding the Third Proportional to 1,421.30 and 3,103.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.30 : 3,103.31 = 3,103.31 : x
2. Step 2: Convert to fraction form
   1,421.30/3,103.31 = 3,103.31/x
3. Step 3: Cross multiply
   1,421.30x = 3,103.31 × 3,103.31
4. Step 4: Simplify right side
   1,421.30x = 9,630,548.47
5. Step 5: Solve for x
   x = 9,630,548.47/1,421.30
6. Step 6: Final answer
   x = 6,775.89