Finding the Third Proportional to 5,234,996 and 7,821,222

Step by Step Solution

1. Step 1: Write the proportion equation
   5,234,996 : 7,821,222 = 7,821,222 : x
2. Step 2: Convert to fraction form
   5,234,996/7,821,222 = 7,821,222/x
3. Step 3: Cross multiply
   5,234,996x = 7,821,222 × 7,821,222
4. Step 4: Simplify right side
   5,234,996x = 61,171,513,573,284
5. Step 5: Solve for x
   x = 61,171,513,573,284/5,234,996
6. Step 6: Final answer
   x = 11,685,111.81