Finding the Third Proportional to 2,161,443 and 3,390,507

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,443 : 3,390,507 = 3,390,507 : x
2. Step 2: Convert to fraction form
   2,161,443/3,390,507 = 3,390,507/x
3. Step 3: Cross multiply
   2,161,443x = 3,390,507 × 3,390,507
4. Step 4: Simplify right side
   2,161,443x = 11,495,537,717,049
5. Step 5: Solve for x
   x = 11,495,537,717,049/2,161,443
6. Step 6: Final answer
   x = 5,318,455.18