Finding the Third Proportional to 189,279 and 404,822

Step by Step Solution

1. Step 1: Write the proportion equation
   189,279 : 404,822 = 404,822 : x
2. Step 2: Convert to fraction form
   189,279/404,822 = 404,822/x
3. Step 3: Cross multiply
   189,279x = 404,822 × 404,822
4. Step 4: Simplify right side
   189,279x = 163,880,851,684
5. Step 5: Solve for x
   x = 163,880,851,684/189,279
6. Step 6: Final answer
   x = 865,816.34