Finding the Third Proportional to 1,389.56 and 3,037.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.56 : 3,037.31 = 3,037.31 : x
2. Step 2: Convert to fraction form
   1,389.56/3,037.31 = 3,037.31/x
3. Step 3: Cross multiply
   1,389.56x = 3,037.31 × 3,037.31
4. Step 4: Simplify right side
   1,389.56x = 9,225,267.22
5. Step 5: Solve for x
   x = 9,225,267.22/1,389.56
6. Step 6: Final answer
   x = 6,638.97