Finding the Third Proportional to 20,525.91 and 42,589.55

Step by Step Solution

1. Step 1: Write the proportion equation
   20,525.91 : 42,589.55 = 42,589.55 : x
2. Step 2: Convert to fraction form
   20,525.91/42,589.55 = 42,589.55/x
3. Step 3: Cross multiply
   20,525.91x = 42,589.55 × 42,589.55
4. Step 4: Simplify right side
   20,525.91x = 1,813,869,503.02
5. Step 5: Solve for x
   x = 1,813,869,503.02/20,525.91
6. Step 6: Final answer
   x = 88,369.76