Finding the Third Proportional to 64,764 and 140,280

Step by Step Solution

1. Step 1: Write the proportion equation
   64,764 : 140,280 = 140,280 : x
2. Step 2: Convert to fraction form
   64,764/140,280 = 140,280/x
3. Step 3: Cross multiply
   64,764x = 140,280 × 140,280
4. Step 4: Simplify right side
   64,764x = 19,678,478,400
5. Step 5: Solve for x
   x = 19,678,478,400/64,764
6. Step 6: Final answer
   x = 303,849.03