Finding the Third Proportional to 5,425,203 and 8,392,911

Step by Step Solution

1. Step 1: Write the proportion equation
   5,425,203 : 8,392,911 = 8,392,911 : x
2. Step 2: Convert to fraction form
   5,425,203/8,392,911 = 8,392,911/x
3. Step 3: Cross multiply
   5,425,203x = 8,392,911 × 8,392,911
4. Step 4: Simplify right side
   5,425,203x = 70,440,955,053,921
5. Step 5: Solve for x
   x = 70,440,955,053,921/5,425,203
6. Step 6: Final answer
   x = 12,984,021.99