Finding the Third Proportional to 999,258 and 2,141,290

Step by Step Solution

1. Step 1: Write the proportion equation
   999,258 : 2,141,290 = 2,141,290 : x
2. Step 2: Convert to fraction form
   999,258/2,141,290 = 2,141,290/x
3. Step 3: Cross multiply
   999,258x = 2,141,290 × 2,141,290
4. Step 4: Simplify right side
   999,258x = 4,585,122,864,100
5. Step 5: Solve for x
   x = 4,585,122,864,100/999,258
6. Step 6: Final answer
   x = 4,588,527.55