Finding the Third Proportional to 435,636 and 693,648

Step by Step Solution

1. Step 1: Write the proportion equation
   435,636 : 693,648 = 693,648 : x
2. Step 2: Convert to fraction form
   435,636/693,648 = 693,648/x
3. Step 3: Cross multiply
   435,636x = 693,648 × 693,648
4. Step 4: Simplify right side
   435,636x = 481,147,547,904
5. Step 5: Solve for x
   x = 481,147,547,904/435,636
6. Step 6: Final answer
   x = 1,104,471.50