Finding the Third Proportional to 215.47 and 461.32

Step by Step Solution

1. Step 1: Write the proportion equation
   215.47 : 461.32 = 461.32 : x
2. Step 2: Convert to fraction form
   215.47/461.32 = 461.32/x
3. Step 3: Cross multiply
   215.47x = 461.32 × 461.32
4. Step 4: Simplify right side
   215.47x = 212,816.43
5. Step 5: Solve for x
   x = 212,816.43/215.47
6. Step 6: Final answer
   x = 987.67