Finding the Third Proportional to 316,363.50 and 680,736

Step by Step Solution

1. Step 1: Write the proportion equation
   316,363.50 : 680,736 = 680,736 : x
2. Step 2: Convert to fraction form
   316,363.50/680,736 = 680,736/x
3. Step 3: Cross multiply
   316,363.50x = 680,736 × 680,736
4. Step 4: Simplify right side
   316,363.50x = 463,401,501,696
5. Step 5: Solve for x
   x = 463,401,501,696/316,363.50
6. Step 6: Final answer
   x = 1,464,775.49