Finding the Third Proportional to 17,287.88 and 26,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,287.88 : 26,090.72 = 26,090.72 : x
2. Step 2: Convert to fraction form
   17,287.88/26,090.72 = 26,090.72/x
3. Step 3: Cross multiply
   17,287.88x = 26,090.72 × 26,090.72
4. Step 4: Simplify right side
   17,287.88x = 680,725,604.89
5. Step 5: Solve for x
   x = 680,725,604.89/17,287.88
6. Step 6: Final answer
   x = 39,375.90