Finding the Third Proportional to 231,187.50 and 345,222

Step by Step Solution

1. Step 1: Write the proportion equation
   231,187.50 : 345,222 = 345,222 : x
2. Step 2: Convert to fraction form
   231,187.50/345,222 = 345,222/x
3. Step 3: Cross multiply
   231,187.50x = 345,222 × 345,222
4. Step 4: Simplify right side
   231,187.50x = 119,178,229,284
5. Step 5: Solve for x
   x = 119,178,229,284/231,187.50
6. Step 6: Final answer
   x = 515,504.64