Finding the Third Proportional to 111,072,142 and 239,212,995

Step by Step Solution

1. Step 1: Write the proportion equation
   111,072,142 : 239,212,995 = 239,212,995 : x
2. Step 2: Convert to fraction form
   111,072,142/239,212,995 = 239,212,995/x
3. Step 3: Cross multiply
   111,072,142x = 239,212,995 × 239,212,995
4. Step 4: Simplify right side
   111,072,142x = 57,222,856,976,870,024
5. Step 5: Solve for x
   x = 57,222,856,976,870,024/111,072,142
6. Step 6: Final answer
   x = 515,186,400.00