Finding the Third Proportional to 31.10 and 62.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31.10 : 62.60 = 62.60 : x
2. Step 2: Convert to fraction form
   31.10/62.60 = 62.60/x
3. Step 3: Cross multiply
   31.10x = 62.60 × 62.60
4. Step 4: Simplify right side
   31.10x = 3,918.89
5. Step 5: Solve for x
   x = 3,918.89/31.10
6. Step 6: Final answer
   x = 126.01