Finding the Third Proportional to 921,691 and 1,916,957

Step by Step Solution

1. Step 1: Write the proportion equation
   921,691 : 1,916,957 = 1,916,957 : x
2. Step 2: Convert to fraction form
   921,691/1,916,957 = 1,916,957/x
3. Step 3: Cross multiply
   921,691x = 1,916,957 × 1,916,957
4. Step 4: Simplify right side
   921,691x = 3,674,724,139,849
5. Step 5: Solve for x
   x = 3,674,724,139,849/921,691
6. Step 6: Final answer
   x = 3,986,937.21