Finding the Third Proportional to 89,060 and 210,240

Step by Step Solution

1. Step 1: Write the proportion equation
   89,060 : 210,240 = 210,240 : x
2. Step 2: Convert to fraction form
   89,060/210,240 = 210,240/x
3. Step 3: Cross multiply
   89,060x = 210,240 × 210,240
4. Step 4: Simplify right side
   89,060x = 44,200,857,600
5. Step 5: Solve for x
   x = 44,200,857,600/89,060
6. Step 6: Final answer
   x = 496,304.26