Finding the Third Proportional to 453,544 and 989,978

Step by Step Solution

1. Step 1: Write the proportion equation
   453,544 : 989,978 = 989,978 : x
2. Step 2: Convert to fraction form
   453,544/989,978 = 989,978/x
3. Step 3: Cross multiply
   453,544x = 989,978 × 989,978
4. Step 4: Simplify right side
   453,544x = 980,056,440,484
5. Step 5: Solve for x
   x = 980,056,440,484/453,544
6. Step 6: Final answer
   x = 2,160,885.03