Finding the Third Proportional to 156,279 and 242,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,279 : 242,140.50 = 242,140.50 : x
2. Step 2: Convert to fraction form
   156,279/242,140.50 = 242,140.50/x
3. Step 3: Cross multiply
   156,279x = 242,140.50 × 242,140.50
4. Step 4: Simplify right side
   156,279x = 58,632,021,740.25
5. Step 5: Solve for x
   x = 58,632,021,740.25/156,279
6. Step 6: Final answer
   x = 375,175.31