Finding the Third Proportional to 260,049 and 386,104.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,049 : 386,104.50 = 386,104.50 : x
2. Step 2: Convert to fraction form
   260,049/386,104.50 = 386,104.50/x
3. Step 3: Cross multiply
   260,049x = 386,104.50 × 386,104.50
4. Step 4: Simplify right side
   260,049x = 149,076,684,920.25
5. Step 5: Solve for x
   x = 149,076,684,920.25/260,049
6. Step 6: Final answer
   x = 573,263.83