Finding the Third Proportional to 231,111 and 355,077

Step by Step Solution

1. Step 1: Write the proportion equation
   231,111 : 355,077 = 355,077 : x
2. Step 2: Convert to fraction form
   231,111/355,077 = 355,077/x
3. Step 3: Cross multiply
   231,111x = 355,077 × 355,077
4. Step 4: Simplify right side
   231,111x = 126,079,675,929
5. Step 5: Solve for x
   x = 126,079,675,929/231,111
6. Step 6: Final answer
   x = 545,537.32