Finding the Third Proportional to 1,445.06 and 3,109.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.06 : 3,109.31 = 3,109.31 : x
2. Step 2: Convert to fraction form
   1,445.06/3,109.31 = 3,109.31/x
3. Step 3: Cross multiply
   1,445.06x = 3,109.31 × 3,109.31
4. Step 4: Simplify right side
   1,445.06x = 9,667,824.22
5. Step 5: Solve for x
   x = 9,667,824.22/1,445.06
6. Step 6: Final answer
   x = 6,690.25