Finding the Third Proportional to 1,998,970 and 4,317,109

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998,970 : 4,317,109 = 4,317,109 : x
2. Step 2: Convert to fraction form
   1,998,970/4,317,109 = 4,317,109/x
3. Step 3: Cross multiply
   1,998,970x = 4,317,109 × 4,317,109
4. Step 4: Simplify right side
   1,998,970x = 18,637,430,117,881
5. Step 5: Solve for x
   x = 18,637,430,117,881/1,998,970
6. Step 6: Final answer
   x = 9,323,516.67