Finding the Third Proportional to 184,558 and 390,986

Step by Step Solution

1. Step 1: Write the proportion equation
   184,558 : 390,986 = 390,986 : x
2. Step 2: Convert to fraction form
   184,558/390,986 = 390,986/x
3. Step 3: Cross multiply
   184,558x = 390,986 × 390,986
4. Step 4: Simplify right side
   184,558x = 152,870,052,196
5. Step 5: Solve for x
   x = 152,870,052,196/184,558
6. Step 6: Final answer
   x = 828,303.58