Finding the Third Proportional to 202,128 and 303,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   202,128 : 303,166.50 = 303,166.50 : x
2. Step 2: Convert to fraction form
   202,128/303,166.50 = 303,166.50/x
3. Step 3: Cross multiply
   202,128x = 303,166.50 × 303,166.50
4. Step 4: Simplify right side
   202,128x = 91,909,926,722.25
5. Step 5: Solve for x
   x = 91,909,926,722.25/202,128
6. Step 6: Final answer
   x = 454,711.50