Finding the Third Proportional to 3,405,870 and 5,676,213

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,870 : 5,676,213 = 5,676,213 : x
2. Step 2: Convert to fraction form
   3,405,870/5,676,213 = 5,676,213/x
3. Step 3: Cross multiply
   3,405,870x = 5,676,213 × 5,676,213
4. Step 4: Simplify right side
   3,405,870x = 32,219,394,021,369
5. Step 5: Solve for x
   x = 32,219,394,021,369/3,405,870
6. Step 6: Final answer
   x = 9,459,960.02