Finding the Third Proportional to 20,256 and 42,125.25

Step by Step Solution

1. Step 1: Write the proportion equation
   20,256 : 42,125.25 = 42,125.25 : x
2. Step 2: Convert to fraction form
   20,256/42,125.25 = 42,125.25/x
3. Step 3: Cross multiply
   20,256x = 42,125.25 × 42,125.25
4. Step 4: Simplify right side
   20,256x = 1,774,536,687.56
5. Step 5: Solve for x
   x = 1,774,536,687.56/20,256
6. Step 6: Final answer
   x = 87,605.48