Finding the Third Proportional to 243,215 and 520,054

Step by Step Solution

1. Step 1: Write the proportion equation
   243,215 : 520,054 = 520,054 : x
2. Step 2: Convert to fraction form
   243,215/520,054 = 520,054/x
3. Step 3: Cross multiply
   243,215x = 520,054 × 520,054
4. Step 4: Simplify right side
   243,215x = 270,456,162,916
5. Step 5: Solve for x
   x = 270,456,162,916/243,215
6. Step 6: Final answer
   x = 1,112,004.45