Finding the Third Proportional to 20,725.88 and 42,013.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,725.88 : 42,013.69 = 42,013.69 : x
2. Step 2: Convert to fraction form
   20,725.88/42,013.69 = 42,013.69/x
3. Step 3: Cross multiply
   20,725.88x = 42,013.69 × 42,013.69
4. Step 4: Simplify right side
   20,725.88x = 1,765,149,937.35
5. Step 5: Solve for x
   x = 1,765,149,937.35/20,725.88
6. Step 6: Final answer
   x = 85,166.49