Finding the Third Proportional to 308,976 and 478,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,976 : 478,165.50 = 478,165.50 : x
2. Step 2: Convert to fraction form
   308,976/478,165.50 = 478,165.50/x
3. Step 3: Cross multiply
   308,976x = 478,165.50 × 478,165.50
4. Step 4: Simplify right side
   308,976x = 228,642,245,390.25
5. Step 5: Solve for x
   x = 228,642,245,390.25/308,976
6. Step 6: Final answer
   x = 740,000.02