Finding the Third Proportional to 807,906 and 1,228,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   807,906 : 1,228,648.50 = 1,228,648.50 : x
2. Step 2: Convert to fraction form
   807,906/1,228,648.50 = 1,228,648.50/x
3. Step 3: Cross multiply
   807,906x = 1,228,648.50 × 1,228,648.50
4. Step 4: Simplify right side
   807,906x = 1,509,577,136,552.25
5. Step 5: Solve for x
   x = 1,509,577,136,552.25/807,906
6. Step 6: Final answer
   x = 1,868,505.91