Finding the Third Proportional to 4,287.09 and 9,005.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,287.09 : 9,005.06 = 9,005.06 : x
2. Step 2: Convert to fraction form
   4,287.09/9,005.06 = 9,005.06/x
3. Step 3: Cross multiply
   4,287.09x = 9,005.06 × 9,005.06
4. Step 4: Simplify right side
   4,287.09x = 81,091,150.63
5. Step 5: Solve for x
   x = 81,091,150.63/4,287.09
6. Step 6: Final answer
   x = 18,915.18