Finding the Third Proportional to 116,813 and 245,290

Step by Step Solution

1. Step 1: Write the proportion equation
   116,813 : 245,290 = 245,290 : x
2. Step 2: Convert to fraction form
   116,813/245,290 = 245,290/x
3. Step 3: Cross multiply
   116,813x = 245,290 × 245,290
4. Step 4: Simplify right side
   116,813x = 60,167,184,100
5. Step 5: Solve for x
   x = 60,167,184,100/116,813
6. Step 6: Final answer
   x = 515,072.67