Finding the Third Proportional to 28,457 and 31,009

Step by Step Solution

1. Step 1: Write the proportion equation
   28,457 : 31,009 = 31,009 : x
2. Step 2: Convert to fraction form
   28,457/31,009 = 31,009/x
3. Step 3: Cross multiply
   28,457x = 31,009 × 31,009
4. Step 4: Simplify right side
   28,457x = 961,558,081
5. Step 5: Solve for x
   x = 961,558,081/28,457
6. Step 6: Final answer
   x = 33,789.86