Finding the Third Proportional to 228,621 and 308,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   228,621 : 308,398.50 = 308,398.50 : x
2. Step 2: Convert to fraction form
   228,621/308,398.50 = 308,398.50/x
3. Step 3: Cross multiply
   228,621x = 308,398.50 × 308,398.50
4. Step 4: Simplify right side
   228,621x = 95,109,634,802.25
5. Step 5: Solve for x
   x = 95,109,634,802.25/228,621
6. Step 6: Final answer
   x = 416,014.43