Finding the Third Proportional to 5,239,732 and 8,331,978

Step by Step Solution

1. Step 1: Write the proportion equation
   5,239,732 : 8,331,978 = 8,331,978 : x
2. Step 2: Convert to fraction form
   5,239,732/8,331,978 = 8,331,978/x
3. Step 3: Cross multiply
   5,239,732x = 8,331,978 × 8,331,978
4. Step 4: Simplify right side
   5,239,732x = 69,421,857,392,484
5. Step 5: Solve for x
   x = 69,421,857,392,484/5,239,732
6. Step 6: Final answer
   x = 13,249,123.69