Finding the Third Proportional to 284,317.50 and 612,699

Step by Step Solution

1. Step 1: Write the proportion equation
   284,317.50 : 612,699 = 612,699 : x
2. Step 2: Convert to fraction form
   284,317.50/612,699 = 612,699/x
3. Step 3: Cross multiply
   284,317.50x = 612,699 × 612,699
4. Step 4: Simplify right side
   284,317.50x = 375,400,064,601
5. Step 5: Solve for x
   x = 375,400,064,601/284,317.50
6. Step 6: Final answer
   x = 1,320,355.11