Finding the Third Proportional to 489,774 and 742,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,774 : 742,054.50 = 742,054.50 : x
2. Step 2: Convert to fraction form
   489,774/742,054.50 = 742,054.50/x
3. Step 3: Cross multiply
   489,774x = 742,054.50 × 742,054.50
4. Step 4: Simplify right side
   489,774x = 550,644,880,970.25
5. Step 5: Solve for x
   x = 550,644,880,970.25/489,774
6. Step 6: Final answer
   x = 1,124,283.61