Finding the Third Proportional to 76,065.50 and 169,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,065.50 : 169,620.50 = 169,620.50 : x
2. Step 2: Convert to fraction form
   76,065.50/169,620.50 = 169,620.50/x
3. Step 3: Cross multiply
   76,065.50x = 169,620.50 × 169,620.50
4. Step 4: Simplify right side
   76,065.50x = 28,771,114,020.25
5. Step 5: Solve for x
   x = 28,771,114,020.25/76,065.50
6. Step 6: Final answer
   x = 378,241.31