Finding the Third Proportional to 116,890.25 and 253,706.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,890.25 : 253,706.50 = 253,706.50 : x
2. Step 2: Convert to fraction form
   116,890.25/253,706.50 = 253,706.50/x
3. Step 3: Cross multiply
   116,890.25x = 253,706.50 × 253,706.50
4. Step 4: Simplify right side
   116,890.25x = 64,366,988,142.25
5. Step 5: Solve for x
   x = 64,366,988,142.25/116,890.25
6. Step 6: Final answer
   x = 550,661.74