Finding the Third Proportional to 201,112.50 and 416,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,112.50 : 416,143.50 = 416,143.50 : x
2. Step 2: Convert to fraction form
   201,112.50/416,143.50 = 416,143.50/x
3. Step 3: Cross multiply
   201,112.50x = 416,143.50 × 416,143.50
4. Step 4: Simplify right side
   201,112.50x = 173,175,412,592.25
5. Step 5: Solve for x
   x = 173,175,412,592.25/201,112.50
6. Step 6: Final answer
   x = 861,087.27