Finding the Third Proportional to 152,651 and 309,442

Step by Step Solution

1. Step 1: Write the proportion equation
   152,651 : 309,442 = 309,442 : x
2. Step 2: Convert to fraction form
   152,651/309,442 = 309,442/x
3. Step 3: Cross multiply
   152,651x = 309,442 × 309,442
4. Step 4: Simplify right side
   152,651x = 95,754,351,364
5. Step 5: Solve for x
   x = 95,754,351,364/152,651
6. Step 6: Final answer
   x = 627,276.28