Finding the Third Proportional to 1,479,400 and 3,186,680

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479,400 : 3,186,680 = 3,186,680 : x
2. Step 2: Convert to fraction form
   1,479,400/3,186,680 = 3,186,680/x
3. Step 3: Cross multiply
   1,479,400x = 3,186,680 × 3,186,680
4. Step 4: Simplify right side
   1,479,400x = 10,154,929,422,400
5. Step 5: Solve for x
   x = 10,154,929,422,400/1,479,400
6. Step 6: Final answer
   x = 6,864,221.59