Finding the Third Proportional to 4,276.55 and 8,345.95

Step by Step Solution

1. Step 1: Write the proportion equation
   4,276.55 : 8,345.95 = 8,345.95 : x
2. Step 2: Convert to fraction form
   4,276.55/8,345.95 = 8,345.95/x
3. Step 3: Cross multiply
   4,276.55x = 8,345.95 × 8,345.95
4. Step 4: Simplify right side
   4,276.55x = 69,654,933.56
5. Step 5: Solve for x
   x = 69,654,933.56/4,276.55
6. Step 6: Final answer
   x = 16,287.66