Finding the Third Proportional to 5,621,226 and 8,416,430

Step by Step Solution

1. Step 1: Write the proportion equation
   5,621,226 : 8,416,430 = 8,416,430 : x
2. Step 2: Convert to fraction form
   5,621,226/8,416,430 = 8,416,430/x
3. Step 3: Cross multiply
   5,621,226x = 8,416,430 × 8,416,430
4. Step 4: Simplify right side
   5,621,226x = 70,836,293,944,900
5. Step 5: Solve for x
   x = 70,836,293,944,900/5,621,226
6. Step 6: Final answer
   x = 12,601,573.74