Finding the Third Proportional to 489,700 and 748,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,700 : 748,621.50 = 748,621.50 : x
2. Step 2: Convert to fraction form
   489,700/748,621.50 = 748,621.50/x
3. Step 3: Cross multiply
   489,700x = 748,621.50 × 748,621.50
4. Step 4: Simplify right side
   489,700x = 560,434,150,262.25
5. Step 5: Solve for x
   x = 560,434,150,262.25/489,700
6. Step 6: Final answer
   x = 1,144,443.84