Finding the Third Proportional to 5,407,074 and 8,369,457

Step by Step Solution

1. Step 1: Write the proportion equation
   5,407,074 : 8,369,457 = 8,369,457 : x
2. Step 2: Convert to fraction form
   5,407,074/8,369,457 = 8,369,457/x
3. Step 3: Cross multiply
   5,407,074x = 8,369,457 × 8,369,457
4. Step 4: Simplify right side
   5,407,074x = 70,047,810,474,849
5. Step 5: Solve for x
   x = 70,047,810,474,849/5,407,074
6. Step 6: Final answer
   x = 12,954,845.91