Finding the Third Proportional to 807,648.50 and 1,267,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   807,648.50 : 1,267,136.50 = 1,267,136.50 : x
2. Step 2: Convert to fraction form
   807,648.50/1,267,136.50 = 1,267,136.50/x
3. Step 3: Cross multiply
   807,648.50x = 1,267,136.50 × 1,267,136.50
4. Step 4: Simplify right side
   807,648.50x = 1,605,634,909,632.25
5. Step 5: Solve for x
   x = 1,605,634,909,632.25/807,648.50
6. Step 6: Final answer
   x = 1,988,036.76