Finding the Third Proportional to 119,959.50 and 277,710

Step by Step Solution

1. Step 1: Write the proportion equation
   119,959.50 : 277,710 = 277,710 : x
2. Step 2: Convert to fraction form
   119,959.50/277,710 = 277,710/x
3. Step 3: Cross multiply
   119,959.50x = 277,710 × 277,710
4. Step 4: Simplify right side
   119,959.50x = 77,122,844,100
5. Step 5: Solve for x
   x = 77,122,844,100/119,959.50
6. Step 6: Final answer
   x = 642,907.35