Finding the Third Proportional to 68,397.75 and 86,464.13

Step by Step Solution

1. Step 1: Write the proportion equation
   68,397.75 : 86,464.13 = 86,464.13 : x
2. Step 2: Convert to fraction form
   68,397.75/86,464.13 = 86,464.13/x
3. Step 3: Cross multiply
   68,397.75x = 86,464.13 × 86,464.13
4. Step 4: Simplify right side
   68,397.75x = 7,476,044,912.02
5. Step 5: Solve for x
   x = 7,476,044,912.02/68,397.75
6. Step 6: Final answer
   x = 109,302.50