Finding the Third Proportional to 19,723,413,222 and 42,239,491,308

Step by Step Solution

1. Step 1: Write the proportion equation
   19,723,413,222 : 42,239,491,308 = 42,239,491,308 : x
2. Step 2: Convert to fraction form
   19,723,413,222/42,239,491,308 = 42,239,491,308/x
3. Step 3: Cross multiply
   19,723,413,222x = 42,239,491,308 × 42,239,491,308
4. Step 4: Simplify right side
   19,723,413,222x = 1,784,174,625,958,607,454,208
5. Step 5: Solve for x
   x = 1,784,174,625,958,607,454,208/19,723,413,222
6. Step 6: Final answer
   x = 90,459,729,554.75