Finding the Third Proportional to 1,239.38 and 1,917.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239.38 : 1,917.94 = 1,917.94 : x
2. Step 2: Convert to fraction form
   1,239.38/1,917.94 = 1,917.94/x
3. Step 3: Cross multiply
   1,239.38x = 1,917.94 × 1,917.94
4. Step 4: Simplify right side
   1,239.38x = 3,678,484.25
5. Step 5: Solve for x
   x = 3,678,484.25/1,239.38
6. Step 6: Final answer
   x = 2,968.02