Finding the Third Proportional to 30,804 and 64,828

Step by Step Solution

1. Step 1: Write the proportion equation
   30,804 : 64,828 = 64,828 : x
2. Step 2: Convert to fraction form
   30,804/64,828 = 64,828/x
3. Step 3: Cross multiply
   30,804x = 64,828 × 64,828
4. Step 4: Simplify right side
   30,804x = 4,202,669,584
5. Step 5: Solve for x
   x = 4,202,669,584/30,804
6. Step 6: Final answer
   x = 136,432.59