Finding the Third Proportional to 20,582.75 and 42,780.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,582.75 : 42,780.75 = 42,780.75 : x
2. Step 2: Convert to fraction form
   20,582.75/42,780.75 = 42,780.75/x
3. Step 3: Cross multiply
   20,582.75x = 42,780.75 × 42,780.75
4. Step 4: Simplify right side
   20,582.75x = 1,830,192,570.56
5. Step 5: Solve for x
   x = 1,830,192,570.56/20,582.75
6. Step 6: Final answer
   x = 88,918.76