Finding the Third Proportional to 245,849 and 379,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,849 : 379,691.50 = 379,691.50 : x
2. Step 2: Convert to fraction form
   245,849/379,691.50 = 379,691.50/x
3. Step 3: Cross multiply
   245,849x = 379,691.50 × 379,691.50
4. Step 4: Simplify right side
   245,849x = 144,165,635,172.25
5. Step 5: Solve for x
   x = 144,165,635,172.25/245,849
6. Step 6: Final answer
   x = 586,399.11