Finding the Third Proportional to 184,306 and 401,390

Step by Step Solution

1. Step 1: Write the proportion equation
   184,306 : 401,390 = 401,390 : x
2. Step 2: Convert to fraction form
   184,306/401,390 = 401,390/x
3. Step 3: Cross multiply
   184,306x = 401,390 × 401,390
4. Step 4: Simplify right side
   184,306x = 161,113,932,100
5. Step 5: Solve for x
   x = 161,113,932,100/184,306
6. Step 6: Final answer
   x = 874,165.42