Finding the Third Proportional to 152,272 and 242,488

Step by Step Solution

1. Step 1: Write the proportion equation
   152,272 : 242,488 = 242,488 : x
2. Step 2: Convert to fraction form
   152,272/242,488 = 242,488/x
3. Step 3: Cross multiply
   152,272x = 242,488 × 242,488
4. Step 4: Simplify right side
   152,272x = 58,800,430,144
5. Step 5: Solve for x
   x = 58,800,430,144/152,272
6. Step 6: Final answer
   x = 386,153.92