Finding the Third Proportional to 152,672 and 309,656

Step by Step Solution

1. Step 1: Write the proportion equation
   152,672 : 309,656 = 309,656 : x
2. Step 2: Convert to fraction form
   152,672/309,656 = 309,656/x
3. Step 3: Cross multiply
   152,672x = 309,656 × 309,656
4. Step 4: Simplify right side
   152,672x = 95,886,838,336
5. Step 5: Solve for x
   x = 95,886,838,336/152,672
6. Step 6: Final answer
   x = 628,057.79