Finding the Third Proportional to 489,011 and 748,046.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,011 : 748,046.50 = 748,046.50 : x
2. Step 2: Convert to fraction form
   489,011/748,046.50 = 748,046.50/x
3. Step 3: Cross multiply
   489,011x = 748,046.50 × 748,046.50
4. Step 4: Simplify right side
   489,011x = 559,573,566,162.25
5. Step 5: Solve for x
   x = 559,573,566,162.25/489,011
6. Step 6: Final answer
   x = 1,144,296.48