Finding the Third Proportional to 20,466 and 42,388

Step by Step Solution

1. Step 1: Write the proportion equation
   20,466 : 42,388 = 42,388 : x
2. Step 2: Convert to fraction form
   20,466/42,388 = 42,388/x
3. Step 3: Cross multiply
   20,466x = 42,388 × 42,388
4. Step 4: Simplify right side
   20,466x = 1,796,742,544
5. Step 5: Solve for x
   x = 1,796,742,544/20,466
6. Step 6: Final answer
   x = 87,791.58