Finding the Third Proportional to 887,212 and 1,389,906

Step by Step Solution

1. Step 1: Write the proportion equation
   887,212 : 1,389,906 = 1,389,906 : x
2. Step 2: Convert to fraction form
   887,212/1,389,906 = 1,389,906/x
3. Step 3: Cross multiply
   887,212x = 1,389,906 × 1,389,906
4. Step 4: Simplify right side
   887,212x = 1,931,838,688,836
5. Step 5: Solve for x
   x = 1,931,838,688,836/887,212
6. Step 6: Final answer
   x = 2,177,426.24