Finding the Third Proportional to 303,529.50 and 456,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,529.50 : 456,079.50 = 456,079.50 : x
2. Step 2: Convert to fraction form
   303,529.50/456,079.50 = 456,079.50/x
3. Step 3: Cross multiply
   303,529.50x = 456,079.50 × 456,079.50
4. Step 4: Simplify right side
   303,529.50x = 208,008,510,320.25
5. Step 5: Solve for x
   x = 208,008,510,320.25/303,529.50
6. Step 6: Final answer
   x = 685,299.16