Finding the Third Proportional to 20,860 and 30,739

Step by Step Solution

1. Step 1: Write the proportion equation
   20,860 : 30,739 = 30,739 : x
2. Step 2: Convert to fraction form
   20,860/30,739 = 30,739/x
3. Step 3: Cross multiply
   20,860x = 30,739 × 30,739
4. Step 4: Simplify right side
   20,860x = 944,886,121
5. Step 5: Solve for x
   x = 944,886,121/20,860
6. Step 6: Final answer
   x = 45,296.55