Finding the Third Proportional to 215,248 and 424,976

Step by Step Solution

1. Step 1: Write the proportion equation
   215,248 : 424,976 = 424,976 : x
2. Step 2: Convert to fraction form
   215,248/424,976 = 424,976/x
3. Step 3: Cross multiply
   215,248x = 424,976 × 424,976
4. Step 4: Simplify right side
   215,248x = 180,604,600,576
5. Step 5: Solve for x
   x = 180,604,600,576/215,248
6. Step 6: Final answer
   x = 839,053.56