Finding the Third Proportional to 9,144,156 and 19,664,664

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144,156 : 19,664,664 = 19,664,664 : x
2. Step 2: Convert to fraction form
   9,144,156/19,664,664 = 19,664,664/x
3. Step 3: Cross multiply
   9,144,156x = 19,664,664 × 19,664,664
4. Step 4: Simplify right side
   9,144,156x = 386,699,010,232,896
5. Step 5: Solve for x
   x = 386,699,010,232,896/9,144,156
6. Step 6: Final answer
   x = 42,289,196.54