Finding the Third Proportional to 20,590.50 and 42,076.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,590.50 : 42,076.50 = 42,076.50 : x
2. Step 2: Convert to fraction form
   20,590.50/42,076.50 = 42,076.50/x
3. Step 3: Cross multiply
   20,590.50x = 42,076.50 × 42,076.50
4. Step 4: Simplify right side
   20,590.50x = 1,770,431,852.25
5. Step 5: Solve for x
   x = 1,770,431,852.25/20,590.50
6. Step 6: Final answer
   x = 85,982.95