Finding the Third Proportional to 2,431.90 and 3,510.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.90 : 3,510.21 = 3,510.21 : x
2. Step 2: Convert to fraction form
   2,431.90/3,510.21 = 3,510.21/x
3. Step 3: Cross multiply
   2,431.90x = 3,510.21 × 3,510.21
4. Step 4: Simplify right side
   2,431.90x = 12,321,580.83
5. Step 5: Solve for x
   x = 12,321,580.83/2,431.90
6. Step 6: Final answer
   x = 5,066.65