Finding the Third Proportional to 303,315 and 436,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,315 : 436,930.50 = 436,930.50 : x
2. Step 2: Convert to fraction form
   303,315/436,930.50 = 436,930.50/x
3. Step 3: Cross multiply
   303,315x = 436,930.50 × 436,930.50
4. Step 4: Simplify right side
   303,315x = 190,908,261,830.25
5. Step 5: Solve for x
   x = 190,908,261,830.25/303,315
6. Step 6: Final answer
   x = 629,405.94