Finding the Third Proportional to 287,739 and 598,920.75

Step by Step Solution

1. Step 1: Write the proportion equation
   287,739 : 598,920.75 = 598,920.75 : x
2. Step 2: Convert to fraction form
   287,739/598,920.75 = 598,920.75/x
3. Step 3: Cross multiply
   287,739x = 598,920.75 × 598,920.75
4. Step 4: Simplify right side
   287,739x = 358,706,064,780.56
5. Step 5: Solve for x
   x = 358,706,064,780.56/287,739
6. Step 6: Final answer
   x = 1,246,636.93