Finding the Third Proportional to 3,210,816 and 4,373,280

Step by Step Solution

1. Step 1: Write the proportion equation
   3,210,816 : 4,373,280 = 4,373,280 : x
2. Step 2: Convert to fraction form
   3,210,816/4,373,280 = 4,373,280/x
3. Step 3: Cross multiply
   3,210,816x = 4,373,280 × 4,373,280
4. Step 4: Simplify right side
   3,210,816x = 19,125,577,958,400
5. Step 5: Solve for x
   x = 19,125,577,958,400/3,210,816
6. Step 6: Final answer
   x = 5,956,609.77