Finding the Third Proportional to 1,291.78 and 1,934.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291.78 : 1,934.72 = 1,934.72 : x
2. Step 2: Convert to fraction form
   1,291.78/1,934.72 = 1,934.72/x
3. Step 3: Cross multiply
   1,291.78x = 1,934.72 × 1,934.72
4. Step 4: Simplify right side
   1,291.78x = 3,743,136.64
5. Step 5: Solve for x
   x = 3,743,136.64/1,291.78
6. Step 6: Final answer
   x = 2,897.66