Finding the Third Proportional to 418,680 and 907,560

Step by Step Solution

1. Step 1: Write the proportion equation
   418,680 : 907,560 = 907,560 : x
2. Step 2: Convert to fraction form
   418,680/907,560 = 907,560/x
3. Step 3: Cross multiply
   418,680x = 907,560 × 907,560
4. Step 4: Simplify right side
   418,680x = 823,665,153,600
5. Step 5: Solve for x
   x = 823,665,153,600/418,680
6. Step 6: Final answer
   x = 1,967,290.42