Finding the Third Proportional to 921,616 and 1,317,912

Step by Step Solution

1. Step 1: Write the proportion equation
   921,616 : 1,317,912 = 1,317,912 : x
2. Step 2: Convert to fraction form
   921,616/1,317,912 = 1,317,912/x
3. Step 3: Cross multiply
   921,616x = 1,317,912 × 1,317,912
4. Step 4: Simplify right side
   921,616x = 1,736,892,039,744
5. Step 5: Solve for x
   x = 1,736,892,039,744/921,616
6. Step 6: Final answer
   x = 1,884,615.76