Finding the Third Proportional to 30.63 and 61.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30.63 : 61.83 = 61.83 : x
2. Step 2: Convert to fraction form
   30.63/61.83 = 61.83/x
3. Step 3: Cross multiply
   30.63x = 61.83 × 61.83
4. Step 4: Simplify right side
   30.63x = 3,822.72
5. Step 5: Solve for x
   x = 3,822.72/30.63
6. Step 6: Final answer
   x = 124.79