Finding the Third Proportional to 779,072 and 1,217,816

Step by Step Solution

1. Step 1: Write the proportion equation
   779,072 : 1,217,816 = 1,217,816 : x
2. Step 2: Convert to fraction form
   779,072/1,217,816 = 1,217,816/x
3. Step 3: Cross multiply
   779,072x = 1,217,816 × 1,217,816
4. Step 4: Simplify right side
   779,072x = 1,483,075,809,856
5. Step 5: Solve for x
   x = 1,483,075,809,856/779,072
6. Step 6: Final answer
   x = 1,903,644.09