Finding the Third Proportional to 132,606 and 286,395.75

Step by Step Solution

1. Step 1: Write the proportion equation
   132,606 : 286,395.75 = 286,395.75 : x
2. Step 2: Convert to fraction form
   132,606/286,395.75 = 286,395.75/x
3. Step 3: Cross multiply
   132,606x = 286,395.75 × 286,395.75
4. Step 4: Simplify right side
   132,606x = 82,022,525,618.06
5. Step 5: Solve for x
   x = 82,022,525,618.06/132,606
6. Step 6: Final answer
   x = 618,543.09