Finding the Third Proportional to 916,308 and 1,393,902

Step by Step Solution

1. Step 1: Write the proportion equation
   916,308 : 1,393,902 = 1,393,902 : x
2. Step 2: Convert to fraction form
   916,308/1,393,902 = 1,393,902/x
3. Step 3: Cross multiply
   916,308x = 1,393,902 × 1,393,902
4. Step 4: Simplify right side
   916,308x = 1,942,962,785,604
5. Step 5: Solve for x
   x = 1,942,962,785,604/916,308
6. Step 6: Final answer
   x = 2,120,425.43