Finding the Third Proportional to 129,451.50 and 276,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,451.50 : 276,892.50 = 276,892.50 : x
2. Step 2: Convert to fraction form
   129,451.50/276,892.50 = 276,892.50/x
3. Step 3: Cross multiply
   129,451.50x = 276,892.50 × 276,892.50
4. Step 4: Simplify right side
   129,451.50x = 76,669,456,556.25
5. Step 5: Solve for x
   x = 76,669,456,556.25/129,451.50
6. Step 6: Final answer
   x = 592,263.95