Finding the Third Proportional to 5,129,460 and 7,974,198

Step by Step Solution

1. Step 1: Write the proportion equation
   5,129,460 : 7,974,198 = 7,974,198 : x
2. Step 2: Convert to fraction form
   5,129,460/7,974,198 = 7,974,198/x
3. Step 3: Cross multiply
   5,129,460x = 7,974,198 × 7,974,198
4. Step 4: Simplify right side
   5,129,460x = 63,587,833,743,204
5. Step 5: Solve for x
   x = 63,587,833,743,204/5,129,460
6. Step 6: Final answer
   x = 12,396,594.13