Finding the Third Proportional to 116,866.50 and 248,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,866.50 : 248,311.50 = 248,311.50 : x
2. Step 2: Convert to fraction form
   116,866.50/248,311.50 = 248,311.50/x
3. Step 3: Cross multiply
   116,866.50x = 248,311.50 × 248,311.50
4. Step 4: Simplify right side
   116,866.50x = 61,658,601,032.25
5. Step 5: Solve for x
   x = 61,658,601,032.25/116,866.50
6. Step 6: Final answer
   x = 527,598.59