Finding the Third Proportional to 225,973 and 309,858

Step by Step Solution

1. Step 1: Write the proportion equation
   225,973 : 309,858 = 309,858 : x
2. Step 2: Convert to fraction form
   225,973/309,858 = 309,858/x
3. Step 3: Cross multiply
   225,973x = 309,858 × 309,858
4. Step 4: Simplify right side
   225,973x = 96,011,980,164
5. Step 5: Solve for x
   x = 96,011,980,164/225,973
6. Step 6: Final answer
   x = 424,882.53