Finding the Third Proportional to 141,907 and 213,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,907 : 213,458.50 = 213,458.50 : x
2. Step 2: Convert to fraction form
   141,907/213,458.50 = 213,458.50/x
3. Step 3: Cross multiply
   141,907x = 213,458.50 × 213,458.50
4. Step 4: Simplify right side
   141,907x = 45,564,531,222.25
5. Step 5: Solve for x
   x = 45,564,531,222.25/141,907
6. Step 6: Final answer
   x = 321,087.27