Finding the Third Proportional to 900,690 and 1,978,526

Step by Step Solution

1. Step 1: Write the proportion equation
   900,690 : 1,978,526 = 1,978,526 : x
2. Step 2: Convert to fraction form
   900,690/1,978,526 = 1,978,526/x
3. Step 3: Cross multiply
   900,690x = 1,978,526 × 1,978,526
4. Step 4: Simplify right side
   900,690x = 3,914,565,132,676
5. Step 5: Solve for x
   x = 3,914,565,132,676/900,690
6. Step 6: Final answer
   x = 4,346,184.74