Finding the Third Proportional to 1,420.50 and 3,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.50 : 3,079.50 = 3,079.50 : x
2. Step 2: Convert to fraction form
   1,420.50/3,079.50 = 3,079.50/x
3. Step 3: Cross multiply
   1,420.50x = 3,079.50 × 3,079.50
4. Step 4: Simplify right side
   1,420.50x = 9,483,320.25
5. Step 5: Solve for x
   x = 9,483,320.25/1,420.50
6. Step 6: Final answer
   x = 6,676.04