Finding the Third Proportional to 3,056.63 and 4,129.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,056.63 : 4,129.31 = 4,129.31 : x
2. Step 2: Convert to fraction form
   3,056.63/4,129.31 = 4,129.31/x
3. Step 3: Cross multiply
   3,056.63x = 4,129.31 × 4,129.31
4. Step 4: Simplify right side
   3,056.63x = 17,051,221.72
5. Step 5: Solve for x
   x = 17,051,221.72/3,056.63
6. Step 6: Final answer
   x = 5,578.45