Finding the Third Proportional to 303,121 and 452,809.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,121 : 452,809.50 = 452,809.50 : x
2. Step 2: Convert to fraction form
   303,121/452,809.50 = 452,809.50/x
3. Step 3: Cross multiply
   303,121x = 452,809.50 × 452,809.50
4. Step 4: Simplify right side
   303,121x = 205,036,443,290.25
5. Step 5: Solve for x
   x = 205,036,443,290.25/303,121
6. Step 6: Final answer
   x = 676,417.81