Finding the Third Proportional to 278,761.50 and 610,902

Step by Step Solution

1. Step 1: Write the proportion equation
   278,761.50 : 610,902 = 610,902 : x
2. Step 2: Convert to fraction form
   278,761.50/610,902 = 610,902/x
3. Step 3: Cross multiply
   278,761.50x = 610,902 × 610,902
4. Step 4: Simplify right side
   278,761.50x = 373,201,253,604
5. Step 5: Solve for x
   x = 373,201,253,604/278,761.50
6. Step 6: Final answer
   x = 1,338,783.35