Finding the Third Proportional to 918,040 and 1,988,600

Step by Step Solution

1. Step 1: Write the proportion equation
   918,040 : 1,988,600 = 1,988,600 : x
2. Step 2: Convert to fraction form
   918,040/1,988,600 = 1,988,600/x
3. Step 3: Cross multiply
   918,040x = 1,988,600 × 1,988,600
4. Step 4: Simplify right side
   918,040x = 3,954,529,960,000
5. Step 5: Solve for x
   x = 3,954,529,960,000/918,040
6. Step 6: Final answer
   x = 4,307,579.15