Finding the Third Proportional to 323,088 and 685,056

Step by Step Solution

1. Step 1: Write the proportion equation
   323,088 : 685,056 = 685,056 : x
2. Step 2: Convert to fraction form
   323,088/685,056 = 685,056/x
3. Step 3: Cross multiply
   323,088x = 685,056 × 685,056
4. Step 4: Simplify right side
   323,088x = 469,301,723,136
5. Step 5: Solve for x
   x = 469,301,723,136/323,088
6. Step 6: Final answer
   x = 1,452,550.77