Finding the Third Proportional to 127,120.50 and 273,700

Step by Step Solution

1. Step 1: Write the proportion equation
   127,120.50 : 273,700 = 273,700 : x
2. Step 2: Convert to fraction form
   127,120.50/273,700 = 273,700/x
3. Step 3: Cross multiply
   127,120.50x = 273,700 × 273,700
4. Step 4: Simplify right side
   127,120.50x = 74,911,690,000
5. Step 5: Solve for x
   x = 74,911,690,000/127,120.50
6. Step 6: Final answer
   x = 589,296.69