Finding the Third Proportional to 260,276 and 543,144

Step by Step Solution

1. Step 1: Write the proportion equation
   260,276 : 543,144 = 543,144 : x
2. Step 2: Convert to fraction form
   260,276/543,144 = 543,144/x
3. Step 3: Cross multiply
   260,276x = 543,144 × 543,144
4. Step 4: Simplify right side
   260,276x = 295,005,404,736
5. Step 5: Solve for x
   x = 295,005,404,736/260,276
6. Step 6: Final answer
   x = 1,133,432.99