Finding the Third Proportional to 284,107.50 and 631,278

Step by Step Solution

1. Step 1: Write the proportion equation
   284,107.50 : 631,278 = 631,278 : x
2. Step 2: Convert to fraction form
   284,107.50/631,278 = 631,278/x
3. Step 3: Cross multiply
   284,107.50x = 631,278 × 631,278
4. Step 4: Simplify right side
   284,107.50x = 398,511,913,284
5. Step 5: Solve for x
   x = 398,511,913,284/284,107.50
6. Step 6: Final answer
   x = 1,402,680.02