Finding the Third Proportional to 788,804 and 1,287,912

Step by Step Solution

1. Step 1: Write the proportion equation
   788,804 : 1,287,912 = 1,287,912 : x
2. Step 2: Convert to fraction form
   788,804/1,287,912 = 1,287,912/x
3. Step 3: Cross multiply
   788,804x = 1,287,912 × 1,287,912
4. Step 4: Simplify right side
   788,804x = 1,658,717,319,744
5. Step 5: Solve for x
   x = 1,658,717,319,744/788,804
6. Step 6: Final answer
   x = 2,102,825.70