Finding the Third Proportional to 868,659 and 1,320,699

Step by Step Solution

1. Step 1: Write the proportion equation
   868,659 : 1,320,699 = 1,320,699 : x
2. Step 2: Convert to fraction form
   868,659/1,320,699 = 1,320,699/x
3. Step 3: Cross multiply
   868,659x = 1,320,699 × 1,320,699
4. Step 4: Simplify right side
   868,659x = 1,744,245,848,601
5. Step 5: Solve for x
   x = 1,744,245,848,601/868,659
6. Step 6: Final answer
   x = 2,007,975.34