Finding the Third Proportional to 2,590.31 and 3,897.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.31 : 3,897.28 = 3,897.28 : x
2. Step 2: Convert to fraction form
   2,590.31/3,897.28 = 3,897.28/x
3. Step 3: Cross multiply
   2,590.31x = 3,897.28 × 3,897.28
4. Step 4: Simplify right side
   2,590.31x = 15,188,801.14
5. Step 5: Solve for x
   x = 15,188,801.14/2,590.31
6. Step 6: Final answer
   x = 5,863.69