Finding the Third Proportional to 3,870,457 and 5,413,479

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870,457 : 5,413,479 = 5,413,479 : x
2. Step 2: Convert to fraction form
   3,870,457/5,413,479 = 5,413,479/x
3. Step 3: Cross multiply
   3,870,457x = 5,413,479 × 5,413,479
4. Step 4: Simplify right side
   3,870,457x = 29,305,754,883,441
5. Step 5: Solve for x
   x = 29,305,754,883,441/3,870,457
6. Step 6: Final answer
   x = 7,571,652.36