Finding the Third Proportional to 157,158 and 243,540

Step by Step Solution

1. Step 1: Write the proportion equation
   157,158 : 243,540 = 243,540 : x
2. Step 2: Convert to fraction form
   157,158/243,540 = 243,540/x
3. Step 3: Cross multiply
   157,158x = 243,540 × 243,540
4. Step 4: Simplify right side
   157,158x = 59,311,731,600
5. Step 5: Solve for x
   x = 59,311,731,600/157,158
6. Step 6: Final answer
   x = 377,401.92