Finding the Third Proportional to 217,134 and 335,543.63

Step by Step Solution

1. Step 1: Write the proportion equation
   217,134 : 335,543.63 = 335,543.63 : x
2. Step 2: Convert to fraction form
   217,134/335,543.63 = 335,543.63/x
3. Step 3: Cross multiply
   217,134x = 335,543.63 × 335,543.63
4. Step 4: Simplify right side
   217,134x = 112,589,524,278.14
5. Step 5: Solve for x
   x = 112,589,524,278.14/217,134
6. Step 6: Final answer
   x = 518,525.54