Finding the Third Proportional to 276,300 and 412,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,300 : 412,744.50 = 412,744.50 : x
2. Step 2: Convert to fraction form
   276,300/412,744.50 = 412,744.50/x
3. Step 3: Cross multiply
   276,300x = 412,744.50 × 412,744.50
4. Step 4: Simplify right side
   276,300x = 170,358,022,280.25
5. Step 5: Solve for x
   x = 170,358,022,280.25/276,300
6. Step 6: Final answer
   x = 616,569.03