Finding the Third Proportional to 489,746 and 742,025.75

Step by Step Solution

1. Step 1: Write the proportion equation
   489,746 : 742,025.75 = 742,025.75 : x
2. Step 2: Convert to fraction form
   489,746/742,025.75 = 742,025.75/x
3. Step 3: Cross multiply
   489,746x = 742,025.75 × 742,025.75
4. Step 4: Simplify right side
   489,746x = 550,602,213,663.06
5. Step 5: Solve for x
   x = 550,602,213,663.06/489,746
6. Step 6: Final answer
   x = 1,124,260.77