Finding the Third Proportional to 129,528 and 199,829.25

Step by Step Solution

1. Step 1: Write the proportion equation
   129,528 : 199,829.25 = 199,829.25 : x
2. Step 2: Convert to fraction form
   129,528/199,829.25 = 199,829.25/x
3. Step 3: Cross multiply
   129,528x = 199,829.25 × 199,829.25
4. Step 4: Simplify right side
   129,528x = 39,931,729,155.56
5. Step 5: Solve for x
   x = 39,931,729,155.56/129,528
6. Step 6: Final answer
   x = 308,286.46