Finding the Third Proportional to 129,068.50 and 189,369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,068.50 : 189,369.50 = 189,369.50 : x
2. Step 2: Convert to fraction form
   129,068.50/189,369.50 = 189,369.50/x
3. Step 3: Cross multiply
   129,068.50x = 189,369.50 × 189,369.50
4. Step 4: Simplify right side
   129,068.50x = 35,860,807,530.25
5. Step 5: Solve for x
   x = 35,860,807,530.25/129,068.50
6. Step 6: Final answer
   x = 277,843.22