Finding the Third Proportional to 43,689 and 69,287.25

Step by Step Solution

1. Step 1: Write the proportion equation
   43,689 : 69,287.25 = 69,287.25 : x
2. Step 2: Convert to fraction form
   43,689/69,287.25 = 69,287.25/x
3. Step 3: Cross multiply
   43,689x = 69,287.25 × 69,287.25
4. Step 4: Simplify right side
   43,689x = 4,800,723,012.56
5. Step 5: Solve for x
   x = 4,800,723,012.56/43,689
6. Step 6: Final answer
   x = 109,884.02