Finding the Third Proportional to 2,116,740 and 3,179,880

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,740 : 3,179,880 = 3,179,880 : x
2. Step 2: Convert to fraction form
   2,116,740/3,179,880 = 3,179,880/x
3. Step 3: Cross multiply
   2,116,740x = 3,179,880 × 3,179,880
4. Step 4: Simplify right side
   2,116,740x = 10,111,636,814,400
5. Step 5: Solve for x
   x = 10,111,636,814,400/2,116,740
6. Step 6: Final answer
   x = 4,776,985.75