Finding the Third Proportional to 620,576 and 1,336,144

Step by Step Solution

1. Step 1: Write the proportion equation
   620,576 : 1,336,144 = 1,336,144 : x
2. Step 2: Convert to fraction form
   620,576/1,336,144 = 1,336,144/x
3. Step 3: Cross multiply
   620,576x = 1,336,144 × 1,336,144
4. Step 4: Simplify right side
   620,576x = 1,785,280,788,736
5. Step 5: Solve for x
   x = 1,785,280,788,736/620,576
6. Step 6: Final answer
   x = 2,876,812.49