Finding the Third Proportional to 5,436,209 and 7,619,797

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436,209 : 7,619,797 = 7,619,797 : x
2. Step 2: Convert to fraction form
   5,436,209/7,619,797 = 7,619,797/x
3. Step 3: Cross multiply
   5,436,209x = 7,619,797 × 7,619,797
4. Step 4: Simplify right side
   5,436,209x = 58,061,306,321,209
5. Step 5: Solve for x
   x = 58,061,306,321,209/5,436,209
6. Step 6: Final answer
   x = 10,680,477.21