Finding the Third Proportional to 81,107 and 173,422

Step by Step Solution

1. Step 1: Write the proportion equation
   81,107 : 173,422 = 173,422 : x
2. Step 2: Convert to fraction form
   81,107/173,422 = 173,422/x
3. Step 3: Cross multiply
   81,107x = 173,422 × 173,422
4. Step 4: Simplify right side
   81,107x = 30,075,190,084
5. Step 5: Solve for x
   x = 30,075,190,084/81,107
6. Step 6: Final answer
   x = 370,808.81