Finding the Third Proportional to 30,997.69 and 67,151.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,997.69 : 67,151.53 = 67,151.53 : x
2. Step 2: Convert to fraction form
   30,997.69/67,151.53 = 67,151.53/x
3. Step 3: Cross multiply
   30,997.69x = 67,151.53 × 67,151.53
4. Step 4: Simplify right side
   30,997.69x = 4,509,328,149.22
5. Step 5: Solve for x
   x = 4,509,328,149.22/30,997.69
6. Step 6: Final answer
   x = 145,473.05