Finding the Third Proportional to 245,487 and 380,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,487 : 380,998.50 = 380,998.50 : x
2. Step 2: Convert to fraction form
   245,487/380,998.50 = 380,998.50/x
3. Step 3: Cross multiply
   245,487x = 380,998.50 × 380,998.50
4. Step 4: Simplify right side
   245,487x = 145,159,857,002.25
5. Step 5: Solve for x
   x = 145,159,857,002.25/245,487
6. Step 6: Final answer
   x = 591,313.83