Finding the Third Proportional to 1,388,684 and 2,164,224

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,684 : 2,164,224 = 2,164,224 : x
2. Step 2: Convert to fraction form
   1,388,684/2,164,224 = 2,164,224/x
3. Step 3: Cross multiply
   1,388,684x = 2,164,224 × 2,164,224
4. Step 4: Simplify right side
   1,388,684x = 4,683,865,522,176
5. Step 5: Solve for x
   x = 4,683,865,522,176/1,388,684
6. Step 6: Final answer
   x = 3,372,880.74