Finding the Third Proportional to 1,839.19 and 3,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.19 : 3,985.31 = 3,985.31 : x
2. Step 2: Convert to fraction form
   1,839.19/3,985.31 = 3,985.31/x
3. Step 3: Cross multiply
   1,839.19x = 3,985.31 × 3,985.31
4. Step 4: Simplify right side
   1,839.19x = 15,882,715.72
5. Step 5: Solve for x
   x = 15,882,715.72/1,839.19
6. Step 6: Final answer
   x = 8,635.72