Finding the Third Proportional to 184,745 and 397,978

Step by Step Solution

1. Step 1: Write the proportion equation
   184,745 : 397,978 = 397,978 : x
2. Step 2: Convert to fraction form
   184,745/397,978 = 397,978/x
3. Step 3: Cross multiply
   184,745x = 397,978 × 397,978
4. Step 4: Simplify right side
   184,745x = 158,386,488,484
5. Step 5: Solve for x
   x = 158,386,488,484/184,745
6. Step 6: Final answer
   x = 857,324.90