Finding the Third Proportional to 5,947.80 and 12,920.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,947.80 : 12,920.45 = 12,920.45 : x
2. Step 2: Convert to fraction form
   5,947.80/12,920.45 = 12,920.45/x
3. Step 3: Cross multiply
   5,947.80x = 12,920.45 × 12,920.45
4. Step 4: Simplify right side
   5,947.80x = 166,938,008.01
5. Step 5: Solve for x
   x = 166,938,008.01/5,947.80
6. Step 6: Final answer
   x = 28,067.16