Finding the Third Proportional to 294,967.50 and 643,515

Step by Step Solution

1. Step 1: Write the proportion equation
   294,967.50 : 643,515 = 643,515 : x
2. Step 2: Convert to fraction form
   294,967.50/643,515 = 643,515/x
3. Step 3: Cross multiply
   294,967.50x = 643,515 × 643,515
4. Step 4: Simplify right side
   294,967.50x = 414,111,555,225
5. Step 5: Solve for x
   x = 414,111,555,225/294,967.50
6. Step 6: Final answer
   x = 1,403,922.65