Finding the Third Proportional to 111,072,154 and 239,213,018

Step by Step Solution

1. Step 1: Write the proportion equation
   111,072,154 : 239,213,018 = 239,213,018 : x
2. Step 2: Convert to fraction form
   111,072,154/239,213,018 = 239,213,018/x
3. Step 3: Cross multiply
   111,072,154x = 239,213,018 × 239,213,018
4. Step 4: Simplify right side
   111,072,154x = 57,222,867,980,668,320
5. Step 5: Solve for x
   x = 57,222,867,980,668,320/111,072,154
6. Step 6: Final answer
   x = 515,186,443.41