Finding the Third Proportional to 20,137 and 30,428

Step by Step Solution

1. Step 1: Write the proportion equation
   20,137 : 30,428 = 30,428 : x
2. Step 2: Convert to fraction form
   20,137/30,428 = 30,428/x
3. Step 3: Cross multiply
   20,137x = 30,428 × 30,428
4. Step 4: Simplify right side
   20,137x = 925,863,184
5. Step 5: Solve for x
   x = 925,863,184/20,137
6. Step 6: Final answer
   x = 45,978.21