Finding the Third Proportional to 64,568 and 140,572

Step by Step Solution

1. Step 1: Write the proportion equation
   64,568 : 140,572 = 140,572 : x
2. Step 2: Convert to fraction form
   64,568/140,572 = 140,572/x
3. Step 3: Cross multiply
   64,568x = 140,572 × 140,572
4. Step 4: Simplify right side
   64,568x = 19,760,487,184
5. Step 5: Solve for x
   x = 19,760,487,184/64,568
6. Step 6: Final answer
   x = 306,041.49