Finding the Third Proportional to 920,138 and 1,988,020

Step by Step Solution

1. Step 1: Write the proportion equation
   920,138 : 1,988,020 = 1,988,020 : x
2. Step 2: Convert to fraction form
   920,138/1,988,020 = 1,988,020/x
3. Step 3: Cross multiply
   920,138x = 1,988,020 × 1,988,020
4. Step 4: Simplify right side
   920,138x = 3,952,223,520,400
5. Step 5: Solve for x
   x = 3,952,223,520,400/920,138
6. Step 6: Final answer
   x = 4,295,250.84