Finding the Third Proportional to 70,713 and 103,689

Step by Step Solution

1. Step 1: Write the proportion equation
   70,713 : 103,689 = 103,689 : x
2. Step 2: Convert to fraction form
   70,713/103,689 = 103,689/x
3. Step 3: Cross multiply
   70,713x = 103,689 × 103,689
4. Step 4: Simplify right side
   70,713x = 10,751,408,721
5. Step 5: Solve for x
   x = 10,751,408,721/70,713
6. Step 6: Final answer
   x = 152,042.89