Finding the Third Proportional to 2,613.63 and 5,590.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.63 : 5,590.88 = 5,590.88 : x
2. Step 2: Convert to fraction form
   2,613.63/5,590.88 = 5,590.88/x
3. Step 3: Cross multiply
   2,613.63x = 5,590.88 × 5,590.88
4. Step 4: Simplify right side
   2,613.63x = 31,257,883.27
5. Step 5: Solve for x
   x = 31,257,883.27/2,613.63
6. Step 6: Final answer
   x = 11,959.59