Finding the Third Proportional to 99,340 and 215,500

Step by Step Solution

1. Step 1: Write the proportion equation
   99,340 : 215,500 = 215,500 : x
2. Step 2: Convert to fraction form
   99,340/215,500 = 215,500/x
3. Step 3: Cross multiply
   99,340x = 215,500 × 215,500
4. Step 4: Simplify right side
   99,340x = 46,440,250,000
5. Step 5: Solve for x
   x = 46,440,250,000/99,340
6. Step 6: Final answer
   x = 467,487.92