Finding the Third Proportional to 3,938.63 and 5,558.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.63 : 5,558.63 = 5,558.63 : x
2. Step 2: Convert to fraction form
   3,938.63/5,558.63 = 5,558.63/x
3. Step 3: Cross multiply
   3,938.63x = 5,558.63 × 5,558.63
4. Step 4: Simplify right side
   3,938.63x = 30,898,311.89
5. Step 5: Solve for x
   x = 30,898,311.89/3,938.63
6. Step 6: Final answer
   x = 7,844.95