Finding the Third Proportional to 64,941.75 and 139,230

Step by Step Solution

1. Step 1: Write the proportion equation
   64,941.75 : 139,230 = 139,230 : x
2. Step 2: Convert to fraction form
   64,941.75/139,230 = 139,230/x
3. Step 3: Cross multiply
   64,941.75x = 139,230 × 139,230
4. Step 4: Simplify right side
   64,941.75x = 19,384,992,900
5. Step 5: Solve for x
   x = 19,384,992,900/64,941.75
6. Step 6: Final answer
   x = 298,498.16