Finding the Third Proportional to 188,356.50 and 392,049

Step by Step Solution

1. Step 1: Write the proportion equation
   188,356.50 : 392,049 = 392,049 : x
2. Step 2: Convert to fraction form
   188,356.50/392,049 = 392,049/x
3. Step 3: Cross multiply
   188,356.50x = 392,049 × 392,049
4. Step 4: Simplify right side
   188,356.50x = 153,702,418,401
5. Step 5: Solve for x
   x = 153,702,418,401/188,356.50
6. Step 6: Final answer
   x = 816,018.66