Finding the Third Proportional to 199,322 and 308,946

Step by Step Solution

1. Step 1: Write the proportion equation
   199,322 : 308,946 = 308,946 : x
2. Step 2: Convert to fraction form
   199,322/308,946 = 308,946/x
3. Step 3: Cross multiply
   199,322x = 308,946 × 308,946
4. Step 4: Simplify right side
   199,322x = 95,447,630,916
5. Step 5: Solve for x
   x = 95,447,630,916/199,322
6. Step 6: Final answer
   x = 478,861.50