Finding the Third Proportional to 640,997.50 and 1,367,805

Step by Step Solution

1. Step 1: Write the proportion equation
   640,997.50 : 1,367,805 = 1,367,805 : x
2. Step 2: Convert to fraction form
   640,997.50/1,367,805 = 1,367,805/x
3. Step 3: Cross multiply
   640,997.50x = 1,367,805 × 1,367,805
4. Step 4: Simplify right side
   640,997.50x = 1,870,890,518,025
5. Step 5: Solve for x
   x = 1,870,890,518,025/640,997.50
6. Step 6: Final answer
   x = 2,918,717.34