Finding the Third Proportional to 131,307 and 208,443

Step by Step Solution

1. Step 1: Write the proportion equation
   131,307 : 208,443 = 208,443 : x
2. Step 2: Convert to fraction form
   131,307/208,443 = 208,443/x
3. Step 3: Cross multiply
   131,307x = 208,443 × 208,443
4. Step 4: Simplify right side
   131,307x = 43,448,484,249
5. Step 5: Solve for x
   x = 43,448,484,249/131,307
6. Step 6: Final answer
   x = 330,892.37