Finding the Third Proportional to 6,391,030 and 8,989,410

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391,030 : 8,989,410 = 8,989,410 : x
2. Step 2: Convert to fraction form
   6,391,030/8,989,410 = 8,989,410/x
3. Step 3: Cross multiply
   6,391,030x = 8,989,410 × 8,989,410
4. Step 4: Simplify right side
   6,391,030x = 80,809,492,148,100
5. Step 5: Solve for x
   x = 80,809,492,148,100/6,391,030
6. Step 6: Final answer
   x = 12,644,204.79