Finding the Third Proportional to 489,006 and 748,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,006 : 748,039.50 = 748,039.50 : x
2. Step 2: Convert to fraction form
   489,006/748,039.50 = 748,039.50/x
3. Step 3: Cross multiply
   489,006x = 748,039.50 × 748,039.50
4. Step 4: Simplify right side
   489,006x = 559,563,093,560.25
5. Step 5: Solve for x
   x = 559,563,093,560.25/489,006
6. Step 6: Final answer
   x = 1,144,286.76