Finding the Third Proportional to 284,431.50 and 609,345

Step by Step Solution

1. Step 1: Write the proportion equation
   284,431.50 : 609,345 = 609,345 : x
2. Step 2: Convert to fraction form
   284,431.50/609,345 = 609,345/x
3. Step 3: Cross multiply
   284,431.50x = 609,345 × 609,345
4. Step 4: Simplify right side
   284,431.50x = 371,301,329,025
5. Step 5: Solve for x
   x = 371,301,329,025/284,431.50
6. Step 6: Final answer
   x = 1,305,415.64