Finding the Third Proportional to 1,685.94 and 2,551.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.94 : 2,551.69 = 2,551.69 : x
2. Step 2: Convert to fraction form
   1,685.94/2,551.69 = 2,551.69/x
3. Step 3: Cross multiply
   1,685.94x = 2,551.69 × 2,551.69
4. Step 4: Simplify right side
   1,685.94x = 6,511,109.10
5. Step 5: Solve for x
   x = 6,511,109.10/1,685.94
6. Step 6: Final answer
   x = 3,862.01