Finding the Third Proportional to 5,129,424 and 7,974,144

Step by Step Solution

1. Step 1: Write the proportion equation
   5,129,424 : 7,974,144 = 7,974,144 : x
2. Step 2: Convert to fraction form
   5,129,424/7,974,144 = 7,974,144/x
3. Step 3: Cross multiply
   5,129,424x = 7,974,144 × 7,974,144
4. Step 4: Simplify right side
   5,129,424x = 63,586,972,532,736
5. Step 5: Solve for x
   x = 63,586,972,532,736/5,129,424
6. Step 6: Final answer
   x = 12,396,513.24