Finding the Third Proportional to 16,872 and 35,428

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872 : 35,428 = 35,428 : x
2. Step 2: Convert to fraction form
   16,872/35,428 = 35,428/x
3. Step 3: Cross multiply
   16,872x = 35,428 × 35,428
4. Step 4: Simplify right side
   16,872x = 1,255,143,184
5. Step 5: Solve for x
   x = 1,255,143,184/16,872
6. Step 6: Final answer
   x = 74,392.08