Finding the Third Proportional to 200,254.50 and 309,222

Step by Step Solution

1. Step 1: Write the proportion equation
   200,254.50 : 309,222 = 309,222 : x
2. Step 2: Convert to fraction form
   200,254.50/309,222 = 309,222/x
3. Step 3: Cross multiply
   200,254.50x = 309,222 × 309,222
4. Step 4: Simplify right side
   200,254.50x = 95,618,245,284
5. Step 5: Solve for x
   x = 95,618,245,284/200,254.50
6. Step 6: Final answer
   x = 477,483.63