Finding the Third Proportional to 5,445.56 and 8,203.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,445.56 : 8,203.78 = 8,203.78 : x
2. Step 2: Convert to fraction form
   5,445.56/8,203.78 = 8,203.78/x
3. Step 3: Cross multiply
   5,445.56x = 8,203.78 × 8,203.78
4. Step 4: Simplify right side
   5,445.56x = 67,302,026.80
5. Step 5: Solve for x
   x = 67,302,026.80/5,445.56
6. Step 6: Final answer
   x = 12,359.06