Finding the Third Proportional to 190,692 and 258,982.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,692 : 258,982.50 = 258,982.50 : x
2. Step 2: Convert to fraction form
   190,692/258,982.50 = 258,982.50/x
3. Step 3: Cross multiply
   190,692x = 258,982.50 × 258,982.50
4. Step 4: Simplify right side
   190,692x = 67,071,935,306.25
5. Step 5: Solve for x
   x = 67,071,935,306.25/190,692
6. Step 6: Final answer
   x = 351,729.15