Finding the Third Proportional to 184,829 and 388,978

Step by Step Solution

1. Step 1: Write the proportion equation
   184,829 : 388,978 = 388,978 : x
2. Step 2: Convert to fraction form
   184,829/388,978 = 388,978/x
3. Step 3: Cross multiply
   184,829x = 388,978 × 388,978
4. Step 4: Simplify right side
   184,829x = 151,303,884,484
5. Step 5: Solve for x
   x = 151,303,884,484/184,829
6. Step 6: Final answer
   x = 818,615.50