Finding the Third Proportional to 6,391,372 and 8,989,946

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391,372 : 8,989,946 = 8,989,946 : x
2. Step 2: Convert to fraction form
   6,391,372/8,989,946 = 8,989,946/x
3. Step 3: Cross multiply
   6,391,372x = 8,989,946 × 8,989,946
4. Step 4: Simplify right side
   6,391,372x = 80,819,129,082,916
5. Step 5: Solve for x
   x = 80,819,129,082,916/6,391,372
6. Step 6: Final answer
   x = 12,645,036.01