Finding the Third Proportional to 132,796.50 and 287,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,796.50 : 287,719.50 = 287,719.50 : x
2. Step 2: Convert to fraction form
   132,796.50/287,719.50 = 287,719.50/x
3. Step 3: Cross multiply
   132,796.50x = 287,719.50 × 287,719.50
4. Step 4: Simplify right side
   132,796.50x = 82,782,510,680.25
5. Step 5: Solve for x
   x = 82,782,510,680.25/132,796.50
6. Step 6: Final answer
   x = 623,378.71