Finding the Third Proportional to 119,919 and 257,981.25

Step by Step Solution

1. Step 1: Write the proportion equation
   119,919 : 257,981.25 = 257,981.25 : x
2. Step 2: Convert to fraction form
   119,919/257,981.25 = 257,981.25/x
3. Step 3: Cross multiply
   119,919x = 257,981.25 × 257,981.25
4. Step 4: Simplify right side
   119,919x = 66,554,325,351.56
5. Step 5: Solve for x
   x = 66,554,325,351.56/119,919
6. Step 6: Final answer
   x = 554,994.00