Finding the Third Proportional to 83,388 and 170,172

Step by Step Solution

1. Step 1: Write the proportion equation
   83,388 : 170,172 = 170,172 : x
2. Step 2: Convert to fraction form
   83,388/170,172 = 170,172/x
3. Step 3: Cross multiply
   83,388x = 170,172 × 170,172
4. Step 4: Simplify right side
   83,388x = 28,958,509,584
5. Step 5: Solve for x
   x = 28,958,509,584/83,388
6. Step 6: Final answer
   x = 347,274.30