Finding the Third Proportional to 129,992.50 and 270,191

Step by Step Solution

1. Step 1: Write the proportion equation
   129,992.50 : 270,191 = 270,191 : x
2. Step 2: Convert to fraction form
   129,992.50/270,191 = 270,191/x
3. Step 3: Cross multiply
   129,992.50x = 270,191 × 270,191
4. Step 4: Simplify right side
   129,992.50x = 73,003,176,481
5. Step 5: Solve for x
   x = 73,003,176,481/129,992.50
6. Step 6: Final answer
   x = 561,595.30