Finding the Third Proportional to 155,437.50 and 278,886

Step by Step Solution

1. Step 1: Write the proportion equation
   155,437.50 : 278,886 = 278,886 : x
2. Step 2: Convert to fraction form
   155,437.50/278,886 = 278,886/x
3. Step 3: Cross multiply
   155,437.50x = 278,886 × 278,886
4. Step 4: Simplify right side
   155,437.50x = 77,777,400,996
5. Step 5: Solve for x
   x = 77,777,400,996/155,437.50
6. Step 6: Final answer
   x = 500,377.33