Finding the Third Proportional to 2,012 and 3,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012 : 3,131.50 = 3,131.50 : x
2. Step 2: Convert to fraction form
   2,012/3,131.50 = 3,131.50/x
3. Step 3: Cross multiply
   2,012x = 3,131.50 × 3,131.50
4. Step 4: Simplify right side
   2,012x = 9,806,292.25
5. Step 5: Solve for x
   x = 9,806,292.25/2,012
6. Step 6: Final answer
   x = 4,873.90