Finding the Third Proportional to 20,543 and 42,058

Step by Step Solution

1. Step 1: Write the proportion equation
   20,543 : 42,058 = 42,058 : x
2. Step 2: Convert to fraction form
   20,543/42,058 = 42,058/x
3. Step 3: Cross multiply
   20,543x = 42,058 × 42,058
4. Step 4: Simplify right side
   20,543x = 1,768,875,364
5. Step 5: Solve for x
   x = 1,768,875,364/20,543
6. Step 6: Final answer
   x = 86,105.99