Finding the Third Proportional to 528,764 and 805,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,764 : 805,538.50 = 805,538.50 : x
2. Step 2: Convert to fraction form
   528,764/805,538.50 = 805,538.50/x
3. Step 3: Cross multiply
   528,764x = 805,538.50 × 805,538.50
4. Step 4: Simplify right side
   528,764x = 648,892,274,982.25
5. Step 5: Solve for x
   x = 648,892,274,982.25/528,764
6. Step 6: Final answer
   x = 1,227,186.94