Finding the Third Proportional to 113,128.88 and 235,558.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,128.88 : 235,558.69 = 235,558.69 : x
2. Step 2: Convert to fraction form
   113,128.88/235,558.69 = 235,558.69/x
3. Step 3: Cross multiply
   113,128.88x = 235,558.69 × 235,558.69
4. Step 4: Simplify right side
   113,128.88x = 55,487,895,256.72
5. Step 5: Solve for x
   x = 55,487,895,256.72/113,128.88
6. Step 6: Final answer
   x = 490,483.93