Finding the Third Proportional to 1.31 and 1.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1.31 : 1.31 = 1.31 : x
2. Step 2: Convert to fraction form
   1.31/1.31 = 1.31/x
3. Step 3: Cross multiply
   1.31x = 1.31 × 1.31
4. Step 4: Simplify right side
   1.31x = 1.72
5. Step 5: Solve for x
   x = 1.72/1.31
6. Step 6: Final answer
   x = 1.31