Finding the Third Proportional to 815,866 and 1,175,091

Step by Step Solution

1. Step 1: Write the proportion equation
   815,866 : 1,175,091 = 1,175,091 : x
2. Step 2: Convert to fraction form
   815,866/1,175,091 = 1,175,091/x
3. Step 3: Cross multiply
   815,866x = 1,175,091 × 1,175,091
4. Step 4: Simplify right side
   815,866x = 1,380,838,858,281
5. Step 5: Solve for x
   x = 1,380,838,858,281/815,866
6. Step 6: Final answer
   x = 1,692,482.42