Finding the Third Proportional to 78,450 and 170,499

Step by Step Solution

1. Step 1: Write the proportion equation
   78,450 : 170,499 = 170,499 : x
2. Step 2: Convert to fraction form
   78,450/170,499 = 170,499/x
3. Step 3: Cross multiply
   78,450x = 170,499 × 170,499
4. Step 4: Simplify right side
   78,450x = 29,069,909,001
5. Step 5: Solve for x
   x = 29,069,909,001/78,450
6. Step 6: Final answer
   x = 370,553.33