Finding the Third Proportional to 140,356 and 215,726

Step by Step Solution

1. Step 1: Write the proportion equation
   140,356 : 215,726 = 215,726 : x
2. Step 2: Convert to fraction form
   140,356/215,726 = 215,726/x
3. Step 3: Cross multiply
   140,356x = 215,726 × 215,726
4. Step 4: Simplify right side
   140,356x = 46,537,707,076
5. Step 5: Solve for x
   x = 46,537,707,076/140,356
6. Step 6: Final answer
   x = 331,569.06