Finding the Third Proportional to 1,322.74 and 2,910.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,322.74 : 2,910.30 = 2,910.30 : x
2. Step 2: Convert to fraction form
   1,322.74/2,910.30 = 2,910.30/x
3. Step 3: Cross multiply
   1,322.74x = 2,910.30 × 2,910.30
4. Step 4: Simplify right side
   1,322.74x = 8,469,873.37
5. Step 5: Solve for x
   x = 8,469,873.37/1,322.74
6. Step 6: Final answer
   x = 6,403.30