Finding the Third Proportional to 5,425,209 and 8,392,920

Step by Step Solution

1. Step 1: Write the proportion equation
   5,425,209 : 8,392,920 = 8,392,920 : x
2. Step 2: Convert to fraction form
   5,425,209/8,392,920 = 8,392,920/x
3. Step 3: Cross multiply
   5,425,209x = 8,392,920 × 8,392,920
4. Step 4: Simplify right side
   5,425,209x = 70,441,106,126,400
5. Step 5: Solve for x
   x = 70,441,106,126,400/5,425,209
6. Step 6: Final answer
   x = 12,984,035.48