Finding the Third Proportional to 132,409 and 302,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,409 : 302,510.50 = 302,510.50 : x
2. Step 2: Convert to fraction form
   132,409/302,510.50 = 302,510.50/x
3. Step 3: Cross multiply
   132,409x = 302,510.50 × 302,510.50
4. Step 4: Simplify right side
   132,409x = 91,512,602,610.25
5. Step 5: Solve for x
   x = 91,512,602,610.25/132,409
6. Step 6: Final answer
   x = 691,135.82