Finding the Third Proportional to 64,553.50 and 139,304

Step by Step Solution

1. Step 1: Write the proportion equation
   64,553.50 : 139,304 = 139,304 : x
2. Step 2: Convert to fraction form
   64,553.50/139,304 = 139,304/x
3. Step 3: Cross multiply
   64,553.50x = 139,304 × 139,304
4. Step 4: Simplify right side
   64,553.50x = 19,405,604,416
5. Step 5: Solve for x
   x = 19,405,604,416/64,553.50
6. Step 6: Final answer
   x = 300,612.74