Finding the Third Proportional to 2,072.25 and 2,690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.25 : 2,690.72 = 2,690.72 : x
2. Step 2: Convert to fraction form
   2,072.25/2,690.72 = 2,690.72/x
3. Step 3: Cross multiply
   2,072.25x = 2,690.72 × 2,690.72
4. Step 4: Simplify right side
   2,072.25x = 7,239,967.39
5. Step 5: Solve for x
   x = 7,239,967.39/2,072.25
6. Step 6: Final answer
   x = 3,493.77