Finding the Third Proportional to 279,536 and 613,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,536 : 613,987.50 = 613,987.50 : x
2. Step 2: Convert to fraction form
   279,536/613,987.50 = 613,987.50/x
3. Step 3: Cross multiply
   279,536x = 613,987.50 × 613,987.50
4. Step 4: Simplify right side
   279,536x = 376,980,650,156.25
5. Step 5: Solve for x
   x = 376,980,650,156.25/279,536
6. Step 6: Final answer
   x = 1,348,594.28