Finding the Third Proportional to 215,138 and 467,590

Step by Step Solution

1. Step 1: Write the proportion equation
   215,138 : 467,590 = 467,590 : x
2. Step 2: Convert to fraction form
   215,138/467,590 = 467,590/x
3. Step 3: Cross multiply
   215,138x = 467,590 × 467,590
4. Step 4: Simplify right side
   215,138x = 218,640,408,100
5. Step 5: Solve for x
   x = 218,640,408,100/215,138
6. Step 6: Final answer
   x = 1,016,279.82