Finding the Third Proportional to 1,272.94 and 2,685.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.94 : 2,685.09 = 2,685.09 : x
2. Step 2: Convert to fraction form
   1,272.94/2,685.09 = 2,685.09/x
3. Step 3: Cross multiply
   1,272.94x = 2,685.09 × 2,685.09
4. Step 4: Simplify right side
   1,272.94x = 7,209,728.45
5. Step 5: Solve for x
   x = 7,209,728.45/1,272.94
6. Step 6: Final answer
   x = 5,663.85