Finding the Third Proportional to 550,972 and 779,886

Step by Step Solution

1. Step 1: Write the proportion equation
   550,972 : 779,886 = 779,886 : x
2. Step 2: Convert to fraction form
   550,972/779,886 = 779,886/x
3. Step 3: Cross multiply
   550,972x = 779,886 × 779,886
4. Step 4: Simplify right side
   550,972x = 608,222,172,996
5. Step 5: Solve for x
   x = 608,222,172,996/550,972
6. Step 6: Final answer
   x = 1,103,907.59