Finding the Third Proportional to 677,196 and 1,410,440

Step by Step Solution

1. Step 1: Write the proportion equation
   677,196 : 1,410,440 = 1,410,440 : x
2. Step 2: Convert to fraction form
   677,196/1,410,440 = 1,410,440/x
3. Step 3: Cross multiply
   677,196x = 1,410,440 × 1,410,440
4. Step 4: Simplify right side
   677,196x = 1,989,340,993,600
5. Step 5: Solve for x
   x = 1,989,340,993,600/677,196
6. Step 6: Final answer
   x = 2,937,614.80