Finding the Third Proportional to 35,900 and 51,390

Step by Step Solution

1. Step 1: Write the proportion equation
   35,900 : 51,390 = 51,390 : x
2. Step 2: Convert to fraction form
   35,900/51,390 = 51,390/x
3. Step 3: Cross multiply
   35,900x = 51,390 × 51,390
4. Step 4: Simplify right side
   35,900x = 2,640,932,100
5. Step 5: Solve for x
   x = 2,640,932,100/35,900
6. Step 6: Final answer
   x = 73,563.57