Finding the Third Proportional to 1,823,566 and 4,221,229

Step by Step Solution

1. Step 1: Write the proportion equation
   1,823,566 : 4,221,229 = 4,221,229 : x
2. Step 2: Convert to fraction form
   1,823,566/4,221,229 = 4,221,229/x
3. Step 3: Cross multiply
   1,823,566x = 4,221,229 × 4,221,229
4. Step 4: Simplify right side
   1,823,566x = 17,818,774,270,441
5. Step 5: Solve for x
   x = 17,818,774,270,441/1,823,566
6. Step 6: Final answer
   x = 9,771,389.83