Finding the Third Proportional to 111,072,168 and 239,213,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,072,168 : 239,213,047.50 = 239,213,047.50 : x
2. Step 2: Convert to fraction form
   111,072,168/239,213,047.50 = 239,213,047.50/x
3. Step 3: Cross multiply
   111,072,168x = 239,213,047.50 × 239,213,047.50
4. Step 4: Simplify right side
   111,072,168x = 57,222,882,094,237,256
5. Step 5: Solve for x
   x = 57,222,882,094,237,256/111,072,168
6. Step 6: Final answer
   x = 515,186,505.54