Finding the Third Proportional to 2,631,213 and 5,668,478

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,213 : 5,668,478 = 5,668,478 : x
2. Step 2: Convert to fraction form
   2,631,213/5,668,478 = 5,668,478/x
3. Step 3: Cross multiply
   2,631,213x = 5,668,478 × 5,668,478
4. Step 4: Simplify right side
   2,631,213x = 32,131,642,836,484
5. Step 5: Solve for x
   x = 32,131,642,836,484/2,631,213
6. Step 6: Final answer
   x = 12,211,722.44