Finding the Third Proportional to 689,610 and 1,035,360

Step by Step Solution

1. Step 1: Write the proportion equation
   689,610 : 1,035,360 = 1,035,360 : x
2. Step 2: Convert to fraction form
   689,610/1,035,360 = 1,035,360/x
3. Step 3: Cross multiply
   689,610x = 1,035,360 × 1,035,360
4. Step 4: Simplify right side
   689,610x = 1,071,970,329,600
5. Step 5: Solve for x
   x = 1,071,970,329,600/689,610
6. Step 6: Final answer
   x = 1,554,458.79