Finding the Third Proportional to 818,859 and 1,308,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   818,859 : 1,308,022.50 = 1,308,022.50 : x
2. Step 2: Convert to fraction form
   818,859/1,308,022.50 = 1,308,022.50/x
3. Step 3: Cross multiply
   818,859x = 1,308,022.50 × 1,308,022.50
4. Step 4: Simplify right side
   818,859x = 1,710,922,860,506.25
5. Step 5: Solve for x
   x = 1,710,922,860,506.25/818,859
6. Step 6: Final answer
   x = 2,089,398.62