Finding the Third Proportional to 51,642 and 72,722

Step by Step Solution

1. Step 1: Write the proportion equation
   51,642 : 72,722 = 72,722 : x
2. Step 2: Convert to fraction form
   51,642/72,722 = 72,722/x
3. Step 3: Cross multiply
   51,642x = 72,722 × 72,722
4. Step 4: Simplify right side
   51,642x = 5,288,489,284
5. Step 5: Solve for x
   x = 5,288,489,284/51,642
6. Step 6: Final answer
   x = 102,406.75