Finding the Third Proportional to 132,789.50 and 311,075.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,789.50 : 311,075.50 = 311,075.50 : x
2. Step 2: Convert to fraction form
   132,789.50/311,075.50 = 311,075.50/x
3. Step 3: Cross multiply
   132,789.50x = 311,075.50 × 311,075.50
4. Step 4: Simplify right side
   132,789.50x = 96,767,966,700.25
5. Step 5: Solve for x
   x = 96,767,966,700.25/132,789.50
6. Step 6: Final answer
   x = 728,732.07