Finding the Third Proportional to 215,102 and 334,158

Step by Step Solution

1. Step 1: Write the proportion equation
   215,102 : 334,158 = 334,158 : x
2. Step 2: Convert to fraction form
   215,102/334,158 = 334,158/x
3. Step 3: Cross multiply
   215,102x = 334,158 × 334,158
4. Step 4: Simplify right side
   215,102x = 111,661,568,964
5. Step 5: Solve for x
   x = 111,661,568,964/215,102
6. Step 6: Final answer
   x = 519,109.86