Finding the Third Proportional to 1,391,186 and 2,213,007

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,186 : 2,213,007 = 2,213,007 : x
2. Step 2: Convert to fraction form
   1,391,186/2,213,007 = 2,213,007/x
3. Step 3: Cross multiply
   1,391,186x = 2,213,007 × 2,213,007
4. Step 4: Simplify right side
   1,391,186x = 4,897,399,982,049
5. Step 5: Solve for x
   x = 4,897,399,982,049/1,391,186
6. Step 6: Final answer
   x = 3,520,305.68