Finding the Third Proportional to 152,266 and 242,479

Step by Step Solution

1. Step 1: Write the proportion equation
   152,266 : 242,479 = 242,479 : x
2. Step 2: Convert to fraction form
   152,266/242,479 = 242,479/x
3. Step 3: Cross multiply
   152,266x = 242,479 × 242,479
4. Step 4: Simplify right side
   152,266x = 58,796,065,441
5. Step 5: Solve for x
   x = 58,796,065,441/152,266
6. Step 6: Final answer
   x = 386,140.47