Finding the Third Proportional to 19,886,664 and 31,440,357

Step by Step Solution

1. Step 1: Write the proportion equation
   19,886,664 : 31,440,357 = 31,440,357 : x
2. Step 2: Convert to fraction form
   19,886,664/31,440,357 = 31,440,357/x
3. Step 3: Cross multiply
   19,886,664x = 31,440,357 × 31,440,357
4. Step 4: Simplify right side
   19,886,664x = 988,496,048,287,449
5. Step 5: Solve for x
   x = 988,496,048,287,449/19,886,664
6. Step 6: Final answer
   x = 49,706,479.09