Finding the Third Proportional to 16,431 and 34,029

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431 : 34,029 = 34,029 : x
2. Step 2: Convert to fraction form
   16,431/34,029 = 34,029/x
3. Step 3: Cross multiply
   16,431x = 34,029 × 34,029
4. Step 4: Simplify right side
   16,431x = 1,157,972,841
5. Step 5: Solve for x
   x = 1,157,972,841/16,431
6. Step 6: Final answer
   x = 70,474.89