Finding the Third Proportional to 5,621,222 and 8,416,424

Step by Step Solution

1. Step 1: Write the proportion equation
   5,621,222 : 8,416,424 = 8,416,424 : x
2. Step 2: Convert to fraction form
   5,621,222/8,416,424 = 8,416,424/x
3. Step 3: Cross multiply
   5,621,222x = 8,416,424 × 8,416,424
4. Step 4: Simplify right side
   5,621,222x = 70,836,192,947,776
5. Step 5: Solve for x
   x = 70,836,192,947,776/5,621,222
6. Step 6: Final answer
   x = 12,601,564.74