Finding the Third Proportional to 200,043.50 and 309,542.25

Step by Step Solution

1. Step 1: Write the proportion equation
   200,043.50 : 309,542.25 = 309,542.25 : x
2. Step 2: Convert to fraction form
   200,043.50/309,542.25 = 309,542.25/x
3. Step 3: Cross multiply
   200,043.50x = 309,542.25 × 309,542.25
4. Step 4: Simplify right side
   200,043.50x = 95,816,404,535.06
5. Step 5: Solve for x
   x = 95,816,404,535.06/200,043.50
6. Step 6: Final answer
   x = 478,977.84