Finding the Third Proportional to 2,145,907 and 4,660,870

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,907 : 4,660,870 = 4,660,870 : x
2. Step 2: Convert to fraction form
   2,145,907/4,660,870 = 4,660,870/x
3. Step 3: Cross multiply
   2,145,907x = 4,660,870 × 4,660,870
4. Step 4: Simplify right side
   2,145,907x = 21,723,709,156,900
5. Step 5: Solve for x
   x = 21,723,709,156,900/2,145,907
6. Step 6: Final answer
   x = 10,123,322.75