Finding the Third Proportional to 1,438,869,259.69 and 3,131,105,567.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,869,259.69 : 3,131,105,567.34 = 3,131,105,567.34 : x
2. Step 2: Convert to fraction form
   1,438,869,259.69/3,131,105,567.34 = 3,131,105,567.34/x
3. Step 3: Cross multiply
   1,438,869,259.69x = 3,131,105,567.34 × 3,131,105,567.34
4. Step 4: Simplify right side
   1,438,869,259.69x = 9,803,822,073,851,340,800
5. Step 5: Solve for x
   x = 9,803,822,073,851,340,800/1,438,869,259.69
6. Step 6: Final answer
   x = 6,813,560,028.37