Finding the Third Proportional to 442,414.50 and 680,935.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,414.50 : 680,935.50 = 680,935.50 : x
2. Step 2: Convert to fraction form
   442,414.50/680,935.50 = 680,935.50/x
3. Step 3: Cross multiply
   442,414.50x = 680,935.50 × 680,935.50
4. Step 4: Simplify right side
   442,414.50x = 463,673,155,160.25
5. Step 5: Solve for x
   x = 463,673,155,160.25/442,414.50
6. Step 6: Final answer
   x = 1,048,051.44