Finding the Third Proportional to 2,172,144 and 4,771,644

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,144 : 4,771,644 = 4,771,644 : x
2. Step 2: Convert to fraction form
   2,172,144/4,771,644 = 4,771,644/x
3. Step 3: Cross multiply
   2,172,144x = 4,771,644 × 4,771,644
4. Step 4: Simplify right side
   2,172,144x = 22,768,586,462,736
5. Step 5: Solve for x
   x = 22,768,586,462,736/2,172,144
6. Step 6: Final answer
   x = 10,482,079.67