Finding the Third Proportional to 1,388,213 and 2,099,802

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,213 : 2,099,802 = 2,099,802 : x
2. Step 2: Convert to fraction form
   1,388,213/2,099,802 = 2,099,802/x
3. Step 3: Cross multiply
   1,388,213x = 2,099,802 × 2,099,802
4. Step 4: Simplify right side
   1,388,213x = 4,409,168,439,204
5. Step 5: Solve for x
   x = 4,409,168,439,204/1,388,213
6. Step 6: Final answer
   x = 3,176,146.92