Finding the Third Proportional to 5,475,894 and 8,512,515

Step by Step Solution

1. Step 1: Write the proportion equation
   5,475,894 : 8,512,515 = 8,512,515 : x
2. Step 2: Convert to fraction form
   5,475,894/8,512,515 = 8,512,515/x
3. Step 3: Cross multiply
   5,475,894x = 8,512,515 × 8,512,515
4. Step 4: Simplify right side
   5,475,894x = 72,462,911,625,225
5. Step 5: Solve for x
   x = 72,462,911,625,225/5,475,894
6. Step 6: Final answer
   x = 13,233,074.20