Finding the Third Proportional to 30,205.50 and 61,992

Step by Step Solution

1. Step 1: Write the proportion equation
   30,205.50 : 61,992 = 61,992 : x
2. Step 2: Convert to fraction form
   30,205.50/61,992 = 61,992/x
3. Step 3: Cross multiply
   30,205.50x = 61,992 × 61,992
4. Step 4: Simplify right side
   30,205.50x = 3,843,008,064
5. Step 5: Solve for x
   x = 3,843,008,064/30,205.50
6. Step 6: Final answer
   x = 127,228.75