Finding the Third Proportional to 178,718 and 384,892

Step by Step Solution

1. Step 1: Write the proportion equation
   178,718 : 384,892 = 384,892 : x
2. Step 2: Convert to fraction form
   178,718/384,892 = 384,892/x
3. Step 3: Cross multiply
   178,718x = 384,892 × 384,892
4. Step 4: Simplify right side
   178,718x = 148,141,851,664
5. Step 5: Solve for x
   x = 148,141,851,664/178,718
6. Step 6: Final answer
   x = 828,914.00