Finding the Third Proportional to 1,722.09 and 3,751.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.09 : 3,751.59 = 3,751.59 : x
2. Step 2: Convert to fraction form
   1,722.09/3,751.59 = 3,751.59/x
3. Step 3: Cross multiply
   1,722.09x = 3,751.59 × 3,751.59
4. Step 4: Simplify right side
   1,722.09x = 14,074,455.67
5. Step 5: Solve for x
   x = 14,074,455.67/1,722.09
6. Step 6: Final answer
   x = 8,172.87