Finding the Third Proportional to 1,712.81 and 3,697.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,712.81 : 3,697.31 = 3,697.31 : x
2. Step 2: Convert to fraction form
   1,712.81/3,697.31 = 3,697.31/x
3. Step 3: Cross multiply
   1,712.81x = 3,697.31 × 3,697.31
4. Step 4: Simplify right side
   1,712.81x = 13,670,119.72
5. Step 5: Solve for x
   x = 13,670,119.72/1,712.81
6. Step 6: Final answer
   x = 7,981.10