Finding the Third Proportional to 1,276.56 and 2,670.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.56 : 2,670.06 = 2,670.06 : x
2. Step 2: Convert to fraction form
   1,276.56/2,670.06 = 2,670.06/x
3. Step 3: Cross multiply
   1,276.56x = 2,670.06 × 2,670.06
4. Step 4: Simplify right side
   1,276.56x = 7,129,233.75
5. Step 5: Solve for x
   x = 7,129,233.75/1,276.56
6. Step 6: Final answer
   x = 5,584.71