Finding the Third Proportional to 112,978 and 245,630

Step by Step Solution

1. Step 1: Write the proportion equation
   112,978 : 245,630 = 245,630 : x
2. Step 2: Convert to fraction form
   112,978/245,630 = 245,630/x
3. Step 3: Cross multiply
   112,978x = 245,630 × 245,630
4. Step 4: Simplify right side
   112,978x = 60,334,096,900
5. Step 5: Solve for x
   x = 60,334,096,900/112,978
6. Step 6: Final answer
   x = 534,034.03