Finding the Third Proportional to 200,468 and 308,260

Step by Step Solution

1. Step 1: Write the proportion equation
   200,468 : 308,260 = 308,260 : x
2. Step 2: Convert to fraction form
   200,468/308,260 = 308,260/x
3. Step 3: Cross multiply
   200,468x = 308,260 × 308,260
4. Step 4: Simplify right side
   200,468x = 95,024,227,600
5. Step 5: Solve for x
   x = 95,024,227,600/200,468
6. Step 6: Final answer
   x = 474,011.95