Finding the Third Proportional to 40,749 and 64,839

Step by Step Solution

1. Step 1: Write the proportion equation
   40,749 : 64,839 = 64,839 : x
2. Step 2: Convert to fraction form
   40,749/64,839 = 64,839/x
3. Step 3: Cross multiply
   40,749x = 64,839 × 64,839
4. Step 4: Simplify right side
   40,749x = 4,204,095,921
5. Step 5: Solve for x
   x = 4,204,095,921/40,749
6. Step 6: Final answer
   x = 103,170.53