Finding the Third Proportional to 111,054 and 239,839.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,054 : 239,839.63 = 239,839.63 : x
2. Step 2: Convert to fraction form
   111,054/239,839.63 = 239,839.63/x
3. Step 3: Cross multiply
   111,054x = 239,839.63 × 239,839.63
4. Step 4: Simplify right side
   111,054x = 57,523,045,720.14
5. Step 5: Solve for x
   x = 57,523,045,720.14/111,054
6. Step 6: Final answer
   x = 517,973.65