Finding the Third Proportional to 868,657 and 1,320,697

Step by Step Solution

1. Step 1: Write the proportion equation
   868,657 : 1,320,697 = 1,320,697 : x
2. Step 2: Convert to fraction form
   868,657/1,320,697 = 1,320,697/x
3. Step 3: Cross multiply
   868,657x = 1,320,697 × 1,320,697
4. Step 4: Simplify right side
   868,657x = 1,744,240,565,809
5. Step 5: Solve for x
   x = 1,744,240,565,809/868,657
6. Step 6: Final answer
   x = 2,007,973.88