Finding the Third Proportional to 588,404 and 909,210

Step by Step Solution

1. Step 1: Write the proportion equation
   588,404 : 909,210 = 909,210 : x
2. Step 2: Convert to fraction form
   588,404/909,210 = 909,210/x
3. Step 3: Cross multiply
   588,404x = 909,210 × 909,210
4. Step 4: Simplify right side
   588,404x = 826,662,824,100
5. Step 5: Solve for x
   x = 826,662,824,100/588,404
6. Step 6: Final answer
   x = 1,404,923.87