Finding the Third Proportional to 302,930.50 and 637,199

Step by Step Solution

1. Step 1: Write the proportion equation
   302,930.50 : 637,199 = 637,199 : x
2. Step 2: Convert to fraction form
   302,930.50/637,199 = 637,199/x
3. Step 3: Cross multiply
   302,930.50x = 637,199 × 637,199
4. Step 4: Simplify right side
   302,930.50x = 406,022,565,601
5. Step 5: Solve for x
   x = 406,022,565,601/302,930.50
6. Step 6: Final answer
   x = 1,340,315.90