Finding the Third Proportional to 921,396 and 1,394,978

Step by Step Solution

1. Step 1: Write the proportion equation
   921,396 : 1,394,978 = 1,394,978 : x
2. Step 2: Convert to fraction form
   921,396/1,394,978 = 1,394,978/x
3. Step 3: Cross multiply
   921,396x = 1,394,978 × 1,394,978
4. Step 4: Simplify right side
   921,396x = 1,945,963,620,484
5. Step 5: Solve for x
   x = 1,945,963,620,484/921,396
6. Step 6: Final answer
   x = 2,111,973.16