Finding the Third Proportional to 5,477.63 and 8,479.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,477.63 : 8,479.69 = 8,479.69 : x
2. Step 2: Convert to fraction form
   5,477.63/8,479.69 = 8,479.69/x
3. Step 3: Cross multiply
   5,477.63x = 8,479.69 × 8,479.69
4. Step 4: Simplify right side
   5,477.63x = 71,905,100.10
5. Step 5: Solve for x
   x = 71,905,100.10/5,477.63
6. Step 6: Final answer
   x = 13,127.06