Finding the Third Proportional to 179,078 and 389,788

Step by Step Solution

1. Step 1: Write the proportion equation
   179,078 : 389,788 = 389,788 : x
2. Step 2: Convert to fraction form
   179,078/389,788 = 389,788/x
3. Step 3: Cross multiply
   179,078x = 389,788 × 389,788
4. Step 4: Simplify right side
   179,078x = 151,934,684,944
5. Step 5: Solve for x
   x = 151,934,684,944/179,078
6. Step 6: Final answer
   x = 848,427.42