Finding the Third Proportional to 610,368.50 and 898,689

Step by Step Solution

1. Step 1: Write the proportion equation
   610,368.50 : 898,689 = 898,689 : x
2. Step 2: Convert to fraction form
   610,368.50/898,689 = 898,689/x
3. Step 3: Cross multiply
   610,368.50x = 898,689 × 898,689
4. Step 4: Simplify right side
   610,368.50x = 807,641,918,721
5. Step 5: Solve for x
   x = 807,641,918,721/610,368.50
6. Step 6: Final answer
   x = 1,323,203.80