Finding the Third Proportional to 98,600 and 215,858

Step by Step Solution

1. Step 1: Write the proportion equation
   98,600 : 215,858 = 215,858 : x
2. Step 2: Convert to fraction form
   98,600/215,858 = 215,858/x
3. Step 3: Cross multiply
   98,600x = 215,858 × 215,858
4. Step 4: Simplify right side
   98,600x = 46,594,676,164
5. Step 5: Solve for x
   x = 46,594,676,164/98,600
6. Step 6: Final answer
   x = 472,562.64