Finding the Third Proportional to 39,320 and 57,828

Step by Step Solution

1. Step 1: Write the proportion equation
   39,320 : 57,828 = 57,828 : x
2. Step 2: Convert to fraction form
   39,320/57,828 = 57,828/x
3. Step 3: Cross multiply
   39,320x = 57,828 × 57,828
4. Step 4: Simplify right side
   39,320x = 3,344,077,584
5. Step 5: Solve for x
   x = 3,344,077,584/39,320
6. Step 6: Final answer
   x = 85,047.75