Finding the Third Proportional to 215,148 and 472,758

Step by Step Solution

1. Step 1: Write the proportion equation
   215,148 : 472,758 = 472,758 : x
2. Step 2: Convert to fraction form
   215,148/472,758 = 472,758/x
3. Step 3: Cross multiply
   215,148x = 472,758 × 472,758
4. Step 4: Simplify right side
   215,148x = 223,500,126,564
5. Step 5: Solve for x
   x = 223,500,126,564/215,148
6. Step 6: Final answer
   x = 1,038,820.38