Finding the Third Proportional to 809,648,479 and 1,243,935,404

Step by Step Solution

1. Step 1: Write the proportion equation
   809,648,479 : 1,243,935,404 = 1,243,935,404 : x
2. Step 2: Convert to fraction form
   809,648,479/1,243,935,404 = 1,243,935,404/x
3. Step 3: Cross multiply
   809,648,479x = 1,243,935,404 × 1,243,935,404
4. Step 4: Simplify right side
   809,648,479x = 1,547,375,289,324,643,328
5. Step 5: Solve for x
   x = 1,547,375,289,324,643,328/809,648,479
6. Step 6: Final answer
   x = 1,911,169,266.00