Finding the Third Proportional to 1,798.88 and 3,931.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.88 : 3,931.31 = 3,931.31 : x
2. Step 2: Convert to fraction form
   1,798.88/3,931.31 = 3,931.31/x
3. Step 3: Cross multiply
   1,798.88x = 3,931.31 × 3,931.31
4. Step 4: Simplify right side
   1,798.88x = 15,455,217.97
5. Step 5: Solve for x
   x = 15,455,217.97/1,798.88
6. Step 6: Final answer
   x = 8,591.60