Finding the Third Proportional to 978,870 and 2,010,440

Step by Step Solution

1. Step 1: Write the proportion equation
   978,870 : 2,010,440 = 2,010,440 : x
2. Step 2: Convert to fraction form
   978,870/2,010,440 = 2,010,440/x
3. Step 3: Cross multiply
   978,870x = 2,010,440 × 2,010,440
4. Step 4: Simplify right side
   978,870x = 4,041,868,993,600
5. Step 5: Solve for x
   x = 4,041,868,993,600/978,870
6. Step 6: Final answer
   x = 4,129,117.24