Finding the Third Proportional to 91,173.38 and 138,018.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,173.38 : 138,018.38 = 138,018.38 : x
2. Step 2: Convert to fraction form
   91,173.38/138,018.38 = 138,018.38/x
3. Step 3: Cross multiply
   91,173.38x = 138,018.38 × 138,018.38
4. Step 4: Simplify right side
   91,173.38x = 19,049,071,837.64
5. Step 5: Solve for x
   x = 19,049,071,837.64/91,173.38
6. Step 6: Final answer
   x = 208,932.40