Finding the Third Proportional to 516,344.50 and 789,306

Step by Step Solution

1. Step 1: Write the proportion equation
   516,344.50 : 789,306 = 789,306 : x
2. Step 2: Convert to fraction form
   516,344.50/789,306 = 789,306/x
3. Step 3: Cross multiply
   516,344.50x = 789,306 × 789,306
4. Step 4: Simplify right side
   516,344.50x = 623,003,961,636
5. Step 5: Solve for x
   x = 623,003,961,636/516,344.50
6. Step 6: Final answer
   x = 1,206,566.47