Finding the Third Proportional to 693.56 and 1,478.25

Step by Step Solution

1. Step 1: Write the proportion equation
   693.56 : 1,478.25 = 1,478.25 : x
2. Step 2: Convert to fraction form
   693.56/1,478.25 = 1,478.25/x
3. Step 3: Cross multiply
   693.56x = 1,478.25 × 1,478.25
4. Step 4: Simplify right side
   693.56x = 2,185,223.06
5. Step 5: Solve for x
   x = 2,185,223.06/693.56
6. Step 6: Final answer
   x = 3,150.72