Finding the Third Proportional to 624.56 and 1,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   624.56 : 1,308.56 = 1,308.56 : x
2. Step 2: Convert to fraction form
   624.56/1,308.56 = 1,308.56/x
3. Step 3: Cross multiply
   624.56x = 1,308.56 × 1,308.56
4. Step 4: Simplify right side
   624.56x = 1,712,335.82
5. Step 5: Solve for x
   x = 1,712,335.82/624.56
6. Step 6: Final answer
   x = 2,741.66