Finding the Third Proportional to 142,335 and 308,045

Step by Step Solution

1. Step 1: Write the proportion equation
   142,335 : 308,045 = 308,045 : x
2. Step 2: Convert to fraction form
   142,335/308,045 = 308,045/x
3. Step 3: Cross multiply
   142,335x = 308,045 × 308,045
4. Step 4: Simplify right side
   142,335x = 94,891,722,025
5. Step 5: Solve for x
   x = 94,891,722,025/142,335
6. Step 6: Final answer
   x = 666,678.77