Finding the Third Proportional to 311,526 and 494,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,526 : 494,869.50 = 494,869.50 : x
2. Step 2: Convert to fraction form
   311,526/494,869.50 = 494,869.50/x
3. Step 3: Cross multiply
   311,526x = 494,869.50 × 494,869.50
4. Step 4: Simplify right side
   311,526x = 244,895,822,030.25
5. Step 5: Solve for x
   x = 244,895,822,030.25/311,526
6. Step 6: Final answer
   x = 786,116.80