Finding the Third Proportional to 789,601.50 and 1,179,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   789,601.50 : 1,179,139.50 = 1,179,139.50 : x
2. Step 2: Convert to fraction form
   789,601.50/1,179,139.50 = 1,179,139.50/x
3. Step 3: Cross multiply
   789,601.50x = 1,179,139.50 × 1,179,139.50
4. Step 4: Simplify right side
   789,601.50x = 1,390,369,960,460.25
5. Step 5: Solve for x
   x = 1,390,369,960,460.25/789,601.50
6. Step 6: Final answer
   x = 1,760,850.20