Finding the Third Proportional to 3,405,964 and 5,676,380

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,964 : 5,676,380 = 5,676,380 : x
2. Step 2: Convert to fraction form
   3,405,964/5,676,380 = 5,676,380/x
3. Step 3: Cross multiply
   3,405,964x = 5,676,380 × 5,676,380
4. Step 4: Simplify right side
   3,405,964x = 32,221,289,904,400
5. Step 5: Solve for x
   x = 32,221,289,904,400/3,405,964
6. Step 6: Final answer
   x = 9,460,255.57