Finding the Third Proportional to 64,635 and 139,647.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,635 : 139,647.75 = 139,647.75 : x
2. Step 2: Convert to fraction form
   64,635/139,647.75 = 139,647.75/x
3. Step 3: Cross multiply
   64,635x = 139,647.75 × 139,647.75
4. Step 4: Simplify right side
   64,635x = 19,501,494,080.06
5. Step 5: Solve for x
   x = 19,501,494,080.06/64,635
6. Step 6: Final answer
   x = 301,717.24