Finding the Third Proportional to 788,746 and 1,287,816

Step by Step Solution

1. Step 1: Write the proportion equation
   788,746 : 1,287,816 = 1,287,816 : x
2. Step 2: Convert to fraction form
   788,746/1,287,816 = 1,287,816/x
3. Step 3: Cross multiply
   788,746x = 1,287,816 × 1,287,816
4. Step 4: Simplify right side
   788,746x = 1,658,470,049,856
5. Step 5: Solve for x
   x = 1,658,470,049,856/788,746
6. Step 6: Final answer
   x = 2,102,666.83