Finding the Third Proportional to 156,280.50 and 242,142.75

Step by Step Solution

1. Step 1: Write the proportion equation
   156,280.50 : 242,142.75 = 242,142.75 : x
2. Step 2: Convert to fraction form
   156,280.50/242,142.75 = 242,142.75/x
3. Step 3: Cross multiply
   156,280.50x = 242,142.75 × 242,142.75
4. Step 4: Simplify right side
   156,280.50x = 58,633,111,377.56
5. Step 5: Solve for x
   x = 58,633,111,377.56/156,280.50
6. Step 6: Final answer
   x = 375,178.68