Finding the Third Proportional to 645,085.50 and 1,024,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   645,085.50 : 1,024,831.50 = 1,024,831.50 : x
2. Step 2: Convert to fraction form
   645,085.50/1,024,831.50 = 1,024,831.50/x
3. Step 3: Cross multiply
   645,085.50x = 1,024,831.50 × 1,024,831.50
4. Step 4: Simplify right side
   645,085.50x = 1,050,279,603,392.25
5. Step 5: Solve for x
   x = 1,050,279,603,392.25/645,085.50
6. Step 6: Final answer
   x = 1,628,124.65