Finding the Third Proportional to 278,982 and 607,785.75

Step by Step Solution

1. Step 1: Write the proportion equation
   278,982 : 607,785.75 = 607,785.75 : x
2. Step 2: Convert to fraction form
   278,982/607,785.75 = 607,785.75/x
3. Step 3: Cross multiply
   278,982x = 607,785.75 × 607,785.75
4. Step 4: Simplify right side
   278,982x = 369,403,517,903.06
5. Step 5: Solve for x
   x = 369,403,517,903.06/278,982
6. Step 6: Final answer
   x = 1,324,112.37