Finding the Third Proportional to 119,988 and 259,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   119,988 : 259,219.50 = 259,219.50 : x
2. Step 2: Convert to fraction form
   119,988/259,219.50 = 259,219.50/x
3. Step 3: Cross multiply
   119,988x = 259,219.50 × 259,219.50
4. Step 4: Simplify right side
   119,988x = 67,194,749,180.25
5. Step 5: Solve for x
   x = 67,194,749,180.25/119,988
6. Step 6: Final answer
   x = 560,012.24