Finding the Third Proportional to 528,597 and 805,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,597 : 805,288.50 = 805,288.50 : x
2. Step 2: Convert to fraction form
   528,597/805,288.50 = 805,288.50/x
3. Step 3: Cross multiply
   528,597x = 805,288.50 × 805,288.50
4. Step 4: Simplify right side
   528,597x = 648,489,568,232.25
5. Step 5: Solve for x
   x = 648,489,568,232.25/528,597
6. Step 6: Final answer
   x = 1,226,812.80