Finding the Third Proportional to 489,767.25 and 742,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,767.25 : 742,042.50 = 742,042.50 : x
2. Step 2: Convert to fraction form
   489,767.25/742,042.50 = 742,042.50/x
3. Step 3: Cross multiply
   489,767.25x = 742,042.50 × 742,042.50
4. Step 4: Simplify right side
   489,767.25x = 550,627,071,806.25
5. Step 5: Solve for x
   x = 550,627,071,806.25/489,767.25
6. Step 6: Final answer
   x = 1,124,262.74