Finding the Third Proportional to 97.88 and 143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   97.88 : 143.72 = 143.72 : x
2. Step 2: Convert to fraction form
   97.88/143.72 = 143.72/x
3. Step 3: Cross multiply
   97.88x = 143.72 × 143.72
4. Step 4: Simplify right side
   97.88x = 20,655.08
5. Step 5: Solve for x
   x = 20,655.08/97.88
6. Step 6: Final answer
   x = 211.04