Finding the Third Proportional to 113,971.50 and 248,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,971.50 : 248,011.50 = 248,011.50 : x
2. Step 2: Convert to fraction form
   113,971.50/248,011.50 = 248,011.50/x
3. Step 3: Cross multiply
   113,971.50x = 248,011.50 × 248,011.50
4. Step 4: Simplify right side
   113,971.50x = 61,509,704,132.25
5. Step 5: Solve for x
   x = 61,509,704,132.25/113,971.50
6. Step 6: Final answer
   x = 539,693.73