Finding the Third Proportional to 157,270.50 and 342,189

Step by Step Solution

1. Step 1: Write the proportion equation
   157,270.50 : 342,189 = 342,189 : x
2. Step 2: Convert to fraction form
   157,270.50/342,189 = 342,189/x
3. Step 3: Cross multiply
   157,270.50x = 342,189 × 342,189
4. Step 4: Simplify right side
   157,270.50x = 117,093,311,721
5. Step 5: Solve for x
   x = 117,093,311,721/157,270.50
6. Step 6: Final answer
   x = 744,534.49