Finding the Third Proportional to 1,311.19 and 2,012.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311.19 : 2,012.34 = 2,012.34 : x
2. Step 2: Convert to fraction form
   1,311.19/2,012.34 = 2,012.34/x
3. Step 3: Cross multiply
   1,311.19x = 2,012.34 × 2,012.34
4. Step 4: Simplify right side
   1,311.19x = 4,049,527.37
5. Step 5: Solve for x
   x = 4,049,527.37/1,311.19
6. Step 6: Final answer
   x = 3,088.44