Finding the Third Proportional to 200,281.50 and 309,253.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,281.50 : 309,253.50 = 309,253.50 : x
2. Step 2: Convert to fraction form
   200,281.50/309,253.50 = 309,253.50/x
3. Step 3: Cross multiply
   200,281.50x = 309,253.50 × 309,253.50
4. Step 4: Simplify right side
   200,281.50x = 95,637,727,262.25
5. Step 5: Solve for x
   x = 95,637,727,262.25/200,281.50
6. Step 6: Final answer
   x = 477,516.53