Finding the Third Proportional to 20,696 and 42,484

Step by Step Solution

1. Step 1: Write the proportion equation
   20,696 : 42,484 = 42,484 : x
2. Step 2: Convert to fraction form
   20,696/42,484 = 42,484/x
3. Step 3: Cross multiply
   20,696x = 42,484 × 42,484
4. Step 4: Simplify right side
   20,696x = 1,804,890,256
5. Step 5: Solve for x
   x = 1,804,890,256/20,696
6. Step 6: Final answer
   x = 87,209.62