Finding the Third Proportional to 116,890 and 253,706

Step by Step Solution

1. Step 1: Write the proportion equation
   116,890 : 253,706 = 253,706 : x
2. Step 2: Convert to fraction form
   116,890/253,706 = 253,706/x
3. Step 3: Cross multiply
   116,890x = 253,706 × 253,706
4. Step 4: Simplify right side
   116,890x = 64,366,734,436
5. Step 5: Solve for x
   x = 64,366,734,436/116,890
6. Step 6: Final answer
   x = 550,660.74