Finding the Third Proportional to 303,129 and 452,821.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,129 : 452,821.50 = 452,821.50 : x
2. Step 2: Convert to fraction form
   303,129/452,821.50 = 452,821.50/x
3. Step 3: Cross multiply
   303,129x = 452,821.50 × 452,821.50
4. Step 4: Simplify right side
   303,129x = 205,047,310,862.25
5. Step 5: Solve for x
   x = 205,047,310,862.25/303,129
6. Step 6: Final answer
   x = 676,435.81