Finding the Third Proportional to 152,631 and 309,402

Step by Step Solution

1. Step 1: Write the proportion equation
   152,631 : 309,402 = 309,402 : x
2. Step 2: Convert to fraction form
   152,631/309,402 = 309,402/x
3. Step 3: Cross multiply
   152,631x = 309,402 × 309,402
4. Step 4: Simplify right side
   152,631x = 95,729,597,604
5. Step 5: Solve for x
   x = 95,729,597,604/152,631
6. Step 6: Final answer
   x = 627,196.29