Finding the Third Proportional to 51,019.50 and 119,139

Step by Step Solution

1. Step 1: Write the proportion equation
   51,019.50 : 119,139 = 119,139 : x
2. Step 2: Convert to fraction form
   51,019.50/119,139 = 119,139/x
3. Step 3: Cross multiply
   51,019.50x = 119,139 × 119,139
4. Step 4: Simplify right side
   51,019.50x = 14,194,101,321
5. Step 5: Solve for x
   x = 14,194,101,321/51,019.50
6. Step 6: Final answer
   x = 278,209.34