Finding the Third Proportional to 528,844 and 805,665.75

Step by Step Solution

1. Step 1: Write the proportion equation
   528,844 : 805,665.75 = 805,665.75 : x
2. Step 2: Convert to fraction form
   528,844/805,665.75 = 805,665.75/x
3. Step 3: Cross multiply
   528,844x = 805,665.75 × 805,665.75
4. Step 4: Simplify right side
   528,844x = 649,097,300,723.06
5. Step 5: Solve for x
   x = 649,097,300,723.06/528,844
6. Step 6: Final answer
   x = 1,227,388.99