Finding the Third Proportional to 788,556 and 1,115,789

Step by Step Solution

1. Step 1: Write the proportion equation
   788,556 : 1,115,789 = 1,115,789 : x
2. Step 2: Convert to fraction form
   788,556/1,115,789 = 1,115,789/x
3. Step 3: Cross multiply
   788,556x = 1,115,789 × 1,115,789
4. Step 4: Simplify right side
   788,556x = 1,244,985,092,521
5. Step 5: Solve for x
   x = 1,244,985,092,521/788,556
6. Step 6: Final answer
   x = 1,578,816.33