Finding the Third Proportional to 316,196.50 and 746,399.75

Step by Step Solution

1. Step 1: Write the proportion equation
   316,196.50 : 746,399.75 = 746,399.75 : x
2. Step 2: Convert to fraction form
   316,196.50/746,399.75 = 746,399.75/x
3. Step 3: Cross multiply
   316,196.50x = 746,399.75 × 746,399.75
4. Step 4: Simplify right side
   316,196.50x = 557,112,586,800.06
5. Step 5: Solve for x
   x = 557,112,586,800.06/316,196.50
6. Step 6: Final answer
   x = 1,761,918.89