Finding the Third Proportional to 1,477,040 and 3,213,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477,040 : 3,213,280 = 3,213,280 : x
2. Step 2: Convert to fraction form
   1,477,040/3,213,280 = 3,213,280/x
3. Step 3: Cross multiply
   1,477,040x = 3,213,280 × 3,213,280
4. Step 4: Simplify right side
   1,477,040x = 10,325,168,358,400
5. Step 5: Solve for x
   x = 10,325,168,358,400/1,477,040
6. Step 6: Final answer
   x = 6,990,446.00