Finding the Third Proportional to 528,850 and 805,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,850 : 805,670.50 = 805,670.50 : x
2. Step 2: Convert to fraction form
   528,850/805,670.50 = 805,670.50/x
3. Step 3: Cross multiply
   528,850x = 805,670.50 × 805,670.50
4. Step 4: Simplify right side
   528,850x = 649,104,954,570.25
5. Step 5: Solve for x
   x = 649,104,954,570.25/528,850
6. Step 6: Final answer
   x = 1,227,389.53