Finding the Third Proportional to 91,422 and 143,289

Step by Step Solution

1. Step 1: Write the proportion equation
   91,422 : 143,289 = 143,289 : x
2. Step 2: Convert to fraction form
   91,422/143,289 = 143,289/x
3. Step 3: Cross multiply
   91,422x = 143,289 × 143,289
4. Step 4: Simplify right side
   91,422x = 20,531,737,521
5. Step 5: Solve for x
   x = 20,531,737,521/91,422
6. Step 6: Final answer
   x = 224,582.02