Finding the Third Proportional to 132,775.50 and 286,680

Step by Step Solution

1. Step 1: Write the proportion equation
   132,775.50 : 286,680 = 286,680 : x
2. Step 2: Convert to fraction form
   132,775.50/286,680 = 286,680/x
3. Step 3: Cross multiply
   132,775.50x = 286,680 × 286,680
4. Step 4: Simplify right side
   132,775.50x = 82,185,422,400
5. Step 5: Solve for x
   x = 82,185,422,400/132,775.50
6. Step 6: Final answer
   x = 618,980.33