Finding the Third Proportional to 20,611.50 and 31,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,611.50 : 31,108.50 = 31,108.50 : x
2. Step 2: Convert to fraction form
   20,611.50/31,108.50 = 31,108.50/x
3. Step 3: Cross multiply
   20,611.50x = 31,108.50 × 31,108.50
4. Step 4: Simplify right side
   20,611.50x = 967,738,772.25
5. Step 5: Solve for x
   x = 967,738,772.25/20,611.50
6. Step 6: Final answer
   x = 46,951.40