Finding the Third Proportional to 644,614,240 and 1,381,123,172

Step by Step Solution

1. Step 1: Write the proportion equation
   644,614,240 : 1,381,123,172 = 1,381,123,172 : x
2. Step 2: Convert to fraction form
   644,614,240/1,381,123,172 = 1,381,123,172/x
3. Step 3: Cross multiply
   644,614,240x = 1,381,123,172 × 1,381,123,172
4. Step 4: Simplify right side
   644,614,240x = 1,907,501,216,235,341,568
5. Step 5: Solve for x
   x = 1,907,501,216,235,341,568/644,614,240
6. Step 6: Final answer
   x = 2,959,136,019.45