Finding the Third Proportional to 98,740 and 215,000

Step by Step Solution

1. Step 1: Write the proportion equation
   98,740 : 215,000 = 215,000 : x
2. Step 2: Convert to fraction form
   98,740/215,000 = 215,000/x
3. Step 3: Cross multiply
   98,740x = 215,000 × 215,000
4. Step 4: Simplify right side
   98,740x = 46,225,000,000
5. Step 5: Solve for x
   x = 46,225,000,000/98,740
6. Step 6: Final answer
   x = 468,148.67