Finding the Third Proportional to 1,915.76 and 4,240.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.76 : 4,240.52 = 4,240.52 : x
2. Step 2: Convert to fraction form
   1,915.76/4,240.52 = 4,240.52/x
3. Step 3: Cross multiply
   1,915.76x = 4,240.52 × 4,240.52
4. Step 4: Simplify right side
   1,915.76x = 17,981,976.91
5. Step 5: Solve for x
   x = 17,981,976.91/1,915.76
6. Step 6: Final answer
   x = 9,386.34