Finding the Third Proportional to 188,364 and 392,064

Step by Step Solution

1. Step 1: Write the proportion equation
   188,364 : 392,064 = 392,064 : x
2. Step 2: Convert to fraction form
   188,364/392,064 = 392,064/x
3. Step 3: Cross multiply
   188,364x = 392,064 × 392,064
4. Step 4: Simplify right side
   188,364x = 153,714,180,096
5. Step 5: Solve for x
   x = 153,714,180,096/188,364
6. Step 6: Final answer
   x = 816,048.61