Finding the Third Proportional to 112,858 and 245,153

Step by Step Solution

1. Step 1: Write the proportion equation
   112,858 : 245,153 = 245,153 : x
2. Step 2: Convert to fraction form
   112,858/245,153 = 245,153/x
3. Step 3: Cross multiply
   112,858x = 245,153 × 245,153
4. Step 4: Simplify right side
   112,858x = 60,099,993,409
5. Step 5: Solve for x
   x = 60,099,993,409/112,858
6. Step 6: Final answer
   x = 532,527.54