Finding the Third Proportional to 3,405,972 and 5,676,392

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,972 : 5,676,392 = 5,676,392 : x
2. Step 2: Convert to fraction form
   3,405,972/5,676,392 = 5,676,392/x
3. Step 3: Cross multiply
   3,405,972x = 5,676,392 × 5,676,392
4. Step 4: Simplify right side
   3,405,972x = 32,221,426,137,664
5. Step 5: Solve for x
   x = 32,221,426,137,664/3,405,972
6. Step 6: Final answer
   x = 9,460,273.35