Finding the Third Proportional to 117.98 and 250.30

Step by Step Solution

1. Step 1: Write the proportion equation
   117.98 : 250.30 = 250.30 : x
2. Step 2: Convert to fraction form
   117.98/250.30 = 250.30/x
3. Step 3: Cross multiply
   117.98x = 250.30 × 250.30
4. Step 4: Simplify right side
   117.98x = 62,648.53
5. Step 5: Solve for x
   x = 62,648.53/117.98
6. Step 6: Final answer
   x = 530.99