Finding the Third Proportional to 1,900.69 and 3,992.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.69 : 3,992.63 = 3,992.63 : x
2. Step 2: Convert to fraction form
   1,900.69/3,992.63 = 3,992.63/x
3. Step 3: Cross multiply
   1,900.69x = 3,992.63 × 3,992.63
4. Step 4: Simplify right side
   1,900.69x = 15,941,054.39
5. Step 5: Solve for x
   x = 15,941,054.39/1,900.69
6. Step 6: Final answer
   x = 8,386.99