Finding the Third Proportional to 64,738.50 and 144,543

Step by Step Solution

1. Step 1: Write the proportion equation
   64,738.50 : 144,543 = 144,543 : x
2. Step 2: Convert to fraction form
   64,738.50/144,543 = 144,543/x
3. Step 3: Cross multiply
   64,738.50x = 144,543 × 144,543
4. Step 4: Simplify right side
   64,738.50x = 20,892,678,849
5. Step 5: Solve for x
   x = 20,892,678,849/64,738.50
6. Step 6: Final answer
   x = 322,724.17