Finding the Third Proportional to 98,261 and 210,540

Step by Step Solution

1. Step 1: Write the proportion equation
   98,261 : 210,540 = 210,540 : x
2. Step 2: Convert to fraction form
   98,261/210,540 = 210,540/x
3. Step 3: Cross multiply
   98,261x = 210,540 × 210,540
4. Step 4: Simplify right side
   98,261x = 44,327,091,600
5. Step 5: Solve for x
   x = 44,327,091,600/98,261
6. Step 6: Final answer
   x = 451,115.82