Finding the Third Proportional to 35,721 and 53,406

Step by Step Solution

1. Step 1: Write the proportion equation
   35,721 : 53,406 = 53,406 : x
2. Step 2: Convert to fraction form
   35,721/53,406 = 53,406/x
3. Step 3: Cross multiply
   35,721x = 53,406 × 53,406
4. Step 4: Simplify right side
   35,721x = 2,852,200,836
5. Step 5: Solve for x
   x = 2,852,200,836/35,721
6. Step 6: Final answer
   x = 79,846.61