Finding the Third Proportional to 231,036 and 354,968

Step by Step Solution

1. Step 1: Write the proportion equation
   231,036 : 354,968 = 354,968 : x
2. Step 2: Convert to fraction form
   231,036/354,968 = 354,968/x
3. Step 3: Cross multiply
   231,036x = 354,968 × 354,968
4. Step 4: Simplify right side
   231,036x = 126,002,281,024
5. Step 5: Solve for x
   x = 126,002,281,024/231,036
6. Step 6: Final answer
   x = 545,379.43