Finding the Third Proportional to 687.55 and 1,473.82

Step by Step Solution

1. Step 1: Write the proportion equation
   687.55 : 1,473.82 = 1,473.82 : x
2. Step 2: Convert to fraction form
   687.55/1,473.82 = 1,473.82/x
3. Step 3: Cross multiply
   687.55x = 1,473.82 × 1,473.82
4. Step 4: Simplify right side
   687.55x = 2,172,146.31
5. Step 5: Solve for x
   x = 2,172,146.31/687.55
6. Step 6: Final answer
   x = 3,159.25