Finding the Third Proportional to 79,069.50 and 169,438.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,069.50 : 169,438.50 = 169,438.50 : x
2. Step 2: Convert to fraction form
   79,069.50/169,438.50 = 169,438.50/x
3. Step 3: Cross multiply
   79,069.50x = 169,438.50 × 169,438.50
4. Step 4: Simplify right side
   79,069.50x = 28,709,405,282.25
5. Step 5: Solve for x
   x = 28,709,405,282.25/79,069.50
6. Step 6: Final answer
   x = 363,090.77