Finding the Third Proportional to 129,061.69 and 276,805.69

Step by Step Solution

1. Step 1: Write the proportion equation
   129,061.69 : 276,805.69 = 276,805.69 : x
2. Step 2: Convert to fraction form
   129,061.69/276,805.69 = 276,805.69/x
3. Step 3: Cross multiply
   129,061.69x = 276,805.69 × 276,805.69
4. Step 4: Simplify right side
   129,061.69x = 76,621,388,632.35
5. Step 5: Solve for x
   x = 76,621,388,632.35/129,061.69
6. Step 6: Final answer
   x = 593,680.36