Finding the Third Proportional to 3,754.13 and 8,690.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,754.13 : 8,690.06 = 8,690.06 : x
2. Step 2: Convert to fraction form
   3,754.13/8,690.06 = 8,690.06/x
3. Step 3: Cross multiply
   3,754.13x = 8,690.06 × 8,690.06
4. Step 4: Simplify right side
   3,754.13x = 75,517,186.25
5. Step 5: Solve for x
   x = 75,517,186.25/3,754.13
6. Step 6: Final answer
   x = 20,115.79