Finding the Third Proportional to 64,284 and 139,530

Step by Step Solution

1. Step 1: Write the proportion equation
   64,284 : 139,530 = 139,530 : x
2. Step 2: Convert to fraction form
   64,284/139,530 = 139,530/x
3. Step 3: Cross multiply
   64,284x = 139,530 × 139,530
4. Step 4: Simplify right side
   64,284x = 19,468,620,900
5. Step 5: Solve for x
   x = 19,468,620,900/64,284
6. Step 6: Final answer
   x = 302,853.29