Finding the Third Proportional to 1,936.90 and 3,975.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.90 : 3,975.89 = 3,975.89 : x
2. Step 2: Convert to fraction form
   1,936.90/3,975.89 = 3,975.89/x
3. Step 3: Cross multiply
   1,936.90x = 3,975.89 × 3,975.89
4. Step 4: Simplify right side
   1,936.90x = 15,807,706.26
5. Step 5: Solve for x
   x = 15,807,706.26/1,936.90
6. Step 6: Final answer
   x = 8,161.35