Finding the Third Proportional to 129,354 and 274,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,354 : 274,360.50 = 274,360.50 : x
2. Step 2: Convert to fraction form
   129,354/274,360.50 = 274,360.50/x
3. Step 3: Cross multiply
   129,354x = 274,360.50 × 274,360.50
4. Step 4: Simplify right side
   129,354x = 75,273,683,960.25
5. Step 5: Solve for x
   x = 75,273,683,960.25/129,354
6. Step 6: Final answer
   x = 581,920.03