Finding the Third Proportional to 37,317 and 51,721

Step by Step Solution

1. Step 1: Write the proportion equation
   37,317 : 51,721 = 51,721 : x
2. Step 2: Convert to fraction form
   37,317/51,721 = 51,721/x
3. Step 3: Cross multiply
   37,317x = 51,721 × 51,721
4. Step 4: Simplify right side
   37,317x = 2,675,061,841
5. Step 5: Solve for x
   x = 2,675,061,841/37,317
6. Step 6: Final answer
   x = 71,684.80