Finding the Third Proportional to 651.72 and 1,346.55

Step by Step Solution

1. Step 1: Write the proportion equation
   651.72 : 1,346.55 = 1,346.55 : x
2. Step 2: Convert to fraction form
   651.72/1,346.55 = 1,346.55/x
3. Step 3: Cross multiply
   651.72x = 1,346.55 × 1,346.55
4. Step 4: Simplify right side
   651.72x = 1,813,185.86
5. Step 5: Solve for x
   x = 1,813,185.86/651.72
6. Step 6: Final answer
   x = 2,782.16