Finding the Third Proportional to 424,185.50 and 909,091.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,185.50 : 909,091.50 = 909,091.50 : x
2. Step 2: Convert to fraction form
   424,185.50/909,091.50 = 909,091.50/x
3. Step 3: Cross multiply
   424,185.50x = 909,091.50 × 909,091.50
4. Step 4: Simplify right side
   424,185.50x = 826,447,355,372.25
5. Step 5: Solve for x
   x = 826,447,355,372.25/424,185.50
6. Step 6: Final answer
   x = 1,948,315.90