Finding the Third Proportional to 5,621,224 and 8,416,427

Step by Step Solution

1. Step 1: Write the proportion equation
   5,621,224 : 8,416,427 = 8,416,427 : x
2. Step 2: Convert to fraction form
   5,621,224/8,416,427 = 8,416,427/x
3. Step 3: Cross multiply
   5,621,224x = 8,416,427 × 8,416,427
4. Step 4: Simplify right side
   5,621,224x = 70,836,243,446,329
5. Step 5: Solve for x
   x = 70,836,243,446,329/5,621,224
6. Step 6: Final answer
   x = 12,601,569.24