Finding the Third Proportional to 20,104 and 42,438

Step by Step Solution

1. Step 1: Write the proportion equation
   20,104 : 42,438 = 42,438 : x
2. Step 2: Convert to fraction form
   20,104/42,438 = 42,438/x
3. Step 3: Cross multiply
   20,104x = 42,438 × 42,438
4. Step 4: Simplify right side
   20,104x = 1,800,983,844
5. Step 5: Solve for x
   x = 1,800,983,844/20,104
6. Step 6: Final answer
   x = 89,583.36