Finding the Third Proportional to 5,234,994 and 7,821,219

Step by Step Solution

1. Step 1: Write the proportion equation
   5,234,994 : 7,821,219 = 7,821,219 : x
2. Step 2: Convert to fraction form
   5,234,994/7,821,219 = 7,821,219/x
3. Step 3: Cross multiply
   5,234,994x = 7,821,219 × 7,821,219
4. Step 4: Simplify right side
   5,234,994x = 61,171,466,645,961
5. Step 5: Solve for x
   x = 61,171,466,645,961/5,234,994
6. Step 6: Final answer
   x = 11,685,107.31