Finding the Third Proportional to 9,889.88 and 17,587.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,889.88 : 17,587.69 = 17,587.69 : x
2. Step 2: Convert to fraction form
   9,889.88/17,587.69 = 17,587.69/x
3. Step 3: Cross multiply
   9,889.88x = 17,587.69 × 17,587.69
4. Step 4: Simplify right side
   9,889.88x = 309,326,751.60
5. Step 5: Solve for x
   x = 309,326,751.60/9,889.88
6. Step 6: Final answer
   x = 31,277.11