Finding the Third Proportional to 675,680 and 909,648

Step by Step Solution

1. Step 1: Write the proportion equation
   675,680 : 909,648 = 909,648 : x
2. Step 2: Convert to fraction form
   675,680/909,648 = 909,648/x
3. Step 3: Cross multiply
   675,680x = 909,648 × 909,648
4. Step 4: Simplify right side
   675,680x = 827,459,483,904
5. Step 5: Solve for x
   x = 827,459,483,904/675,680
6. Step 6: Final answer
   x = 1,224,632.20