Finding the Third Proportional to 111,201,891 and 231,607,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,201,891 : 231,607,873.50 = 231,607,873.50 : x
2. Step 2: Convert to fraction form
   111,201,891/231,607,873.50 = 231,607,873.50/x
3. Step 3: Cross multiply
   111,201,891x = 231,607,873.50 × 231,607,873.50
4. Step 4: Simplify right side
   111,201,891x = 53,642,207,067,192,000
5. Step 5: Solve for x
   x = 53,642,207,067,192,000/111,201,891
6. Step 6: Final answer
   x = 482,385,745.29