Finding the Third Proportional to 1,591.88 and 3,490.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.88 : 3,490.88 = 3,490.88 : x
2. Step 2: Convert to fraction form
   1,591.88/3,490.88 = 3,490.88/x
3. Step 3: Cross multiply
   1,591.88x = 3,490.88 × 3,490.88
4. Step 4: Simplify right side
   1,591.88x = 12,186,208.27
5. Step 5: Solve for x
   x = 12,186,208.27/1,591.88
6. Step 6: Final answer
   x = 7,655.25