Finding the Third Proportional to 231,315.50 and 345,054

Step by Step Solution

1. Step 1: Write the proportion equation
   231,315.50 : 345,054 = 345,054 : x
2. Step 2: Convert to fraction form
   231,315.50/345,054 = 345,054/x
3. Step 3: Cross multiply
   231,315.50x = 345,054 × 345,054
4. Step 4: Simplify right side
   231,315.50x = 119,062,262,916
5. Step 5: Solve for x
   x = 119,062,262,916/231,315.50
6. Step 6: Final answer
   x = 514,718.05