Finding the Third Proportional to 359,638.50 and 789,261

Step by Step Solution

1. Step 1: Write the proportion equation
   359,638.50 : 789,261 = 789,261 : x
2. Step 2: Convert to fraction form
   359,638.50/789,261 = 789,261/x
3. Step 3: Cross multiply
   359,638.50x = 789,261 × 789,261
4. Step 4: Simplify right side
   359,638.50x = 622,932,926,121
5. Step 5: Solve for x
   x = 622,932,926,121/359,638.50
6. Step 6: Final answer
   x = 1,732,108.56