Finding the Third Proportional to 118,573.88 and 279,900.56

Step by Step Solution

1. Step 1: Write the proportion equation
   118,573.88 : 279,900.56 = 279,900.56 : x
2. Step 2: Convert to fraction form
   118,573.88/279,900.56 = 279,900.56/x
3. Step 3: Cross multiply
   118,573.88x = 279,900.56 × 279,900.56
4. Step 4: Simplify right side
   118,573.88x = 78,344,324,887.82
5. Step 5: Solve for x
   x = 78,344,324,887.82/118,573.88
6. Step 6: Final answer
   x = 660,721.64