Finding the Third Proportional to 123.99 and 293.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123.99 : 293.72 = 293.72 : x
2. Step 2: Convert to fraction form
   123.99/293.72 = 293.72/x
3. Step 3: Cross multiply
   123.99x = 293.72 × 293.72
4. Step 4: Simplify right side
   123.99x = 86,273.72
5. Step 5: Solve for x
   x = 86,273.72/123.99
6. Step 6: Final answer
   x = 695.80