Finding the Third Proportional to 245,599.50 and 380,388

Step by Step Solution

1. Step 1: Write the proportion equation
   245,599.50 : 380,388 = 380,388 : x
2. Step 2: Convert to fraction form
   245,599.50/380,388 = 380,388/x
3. Step 3: Cross multiply
   245,599.50x = 380,388 × 380,388
4. Step 4: Simplify right side
   245,599.50x = 144,695,030,544
5. Step 5: Solve for x
   x = 144,695,030,544/245,599.50
6. Step 6: Final answer
   x = 589,150.35