Finding the Third Proportional to 20,153 and 42,707

Step by Step Solution

1. Step 1: Write the proportion equation
   20,153 : 42,707 = 42,707 : x
2. Step 2: Convert to fraction form
   20,153/42,707 = 42,707/x
3. Step 3: Cross multiply
   20,153x = 42,707 × 42,707
4. Step 4: Simplify right side
   20,153x = 1,823,887,849
5. Step 5: Solve for x
   x = 1,823,887,849/20,153
6. Step 6: Final answer
   x = 90,502.05