Finding the Third Proportional to 918,218 and 1,983,978

Step by Step Solution

1. Step 1: Write the proportion equation
   918,218 : 1,983,978 = 1,983,978 : x
2. Step 2: Convert to fraction form
   918,218/1,983,978 = 1,983,978/x
3. Step 3: Cross multiply
   918,218x = 1,983,978 × 1,983,978
4. Step 4: Simplify right side
   918,218x = 3,936,168,704,484
5. Step 5: Solve for x
   x = 3,936,168,704,484/918,218
6. Step 6: Final answer
   x = 4,286,747.49