Finding the Third Proportional to 140,280 and 189,000

Step by Step Solution

1. Step 1: Write the proportion equation
   140,280 : 189,000 = 189,000 : x
2. Step 2: Convert to fraction form
   140,280/189,000 = 189,000/x
3. Step 3: Cross multiply
   140,280x = 189,000 × 189,000
4. Step 4: Simplify right side
   140,280x = 35,721,000,000
5. Step 5: Solve for x
   x = 35,721,000,000/140,280
6. Step 6: Final answer
   x = 254,640.72