Finding the Third Proportional to 140,484 and 215,422

Step by Step Solution

1. Step 1: Write the proportion equation
   140,484 : 215,422 = 215,422 : x
2. Step 2: Convert to fraction form
   140,484/215,422 = 215,422/x
3. Step 3: Cross multiply
   140,484x = 215,422 × 215,422
4. Step 4: Simplify right side
   140,484x = 46,406,638,084
5. Step 5: Solve for x
   x = 46,406,638,084/140,484
6. Step 6: Final answer
   x = 330,333.97