Finding the Third Proportional to 3,405,970 and 5,676,389

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,970 : 5,676,389 = 5,676,389 : x
2. Step 2: Convert to fraction form
   3,405,970/5,676,389 = 5,676,389/x
3. Step 3: Cross multiply
   3,405,970x = 5,676,389 × 5,676,389
4. Step 4: Simplify right side
   3,405,970x = 32,221,392,079,321
5. Step 5: Solve for x
   x = 32,221,392,079,321/3,405,970
6. Step 6: Final answer
   x = 9,460,268.90